Henry the Bearded (, ; c. 1165/1170 – 19 March 1238) was a Polish duke from the Silesian branch of the Piast dynasty. He was Duke of Silesia at Wrocław from 1201, Duke of Kraków and High Duke of all Poland – internally divided – from 1232 until his death. A competent ruler, he supported the development of mining, carried out a monetary reform, granted the first town charters, and attempted to reunite an internally divided Poland.

Henry succeeded his father, Bolesław I the Tall, as Duke of Silesia, and, through a combination of dynastic marriages, military campaigns, political alliances, and territorial acquisitions, he expanded the influence of the Silesian Piasts. In 1202, he became involved in the struggle for control of Kraków and the seniorate province, although his attempts to establish lasting authority over divided Polish lands there were repeatedly challenged by other Piast princes.

A prominent patron of Christian institutions, Henry supported monasteries and churches and promoted the settlement of German-speaking communities in Silesia. His wife, Hedwig of Andechs, later canonized as Saint Hedwig of Silesia, played an important role in his religious and dynastic affairs. Their rule was associated with economic development, the foundation of settlements and cities under Magdeburg Law, and the growing importance of Silesia within Central Europe. Most notably, Złotoryja was the first town in Poland to be granted town privileges in 1211 under Henry.

Henry I died in 1238 and was succeeded by his son, Henry II the Pious, as Duke of Silesia. While he was unable to achieve the lasting reunification of the Polish lands under a single ruler, Henry I's reign played a crucial role in strengthening the territorial position and political influence of the Silesian Piast dynasty. His rule, alongside that of his son, represents a significant phase in the political history of medieval Poland and reflects the broader developments of the period of regional fragmentation.

Life Early career and the loss of Opole Henry was the fourth son of Duke Bolesław I the Tall of Silesia, by his second wife Christina, probably a German. He was born in Głogów, Lower Silesia. Henry's three older brothers Boleslaw, Conrad and John (1174–1190), died. His older half-brother Jarosław of Opole became a priest, possibly because of the scheming of Henry's mother, Christina. Henry became Bolesław's sole heir in 1190. Through his marriage with Hedwig of Andechs (1182–1189), Henry was connected to the rulers of Germany, Hungary, Bohemia, and France.

Henry's father, Bolesław I, died on 8 December 1201. Early in 1202, Henry's uncle, Duke Mieszko IV Tanglefoot of Upper Silesia, attacked and took the Duchy of Opole, which had passed from Jarosław's possession into Henry's. Mieszko wanted more than Opole, but was opposed by Archbishop of Gniezno, Henry Kietlicz and the Bishop of Wrocław, Cyprian. They supported Henry because he paid them 1,000 pieces of silver.

Relations with the Hohenstaufens, Wittelsbachs, Welfs and Přemyslids When the Holy Roman Empire was in the middle of the struggles between the Staufer and the Welfs, at first, Henry wasn't directly involved in this fight.

After 1207, Henry betrothed his daughter Gertrude to the Pfalzgraf Otto VIII, Count Palatine of Bavaria of the House of Wittelsbach, then a loyal follower of the House of Hohenstaufen. His wife Agnes, of the ducal House of Andechs, was a strong supporter of the Staufer. Henry remained neutral and refused to take part in the conflict between the Holy Roman Empire, the Staufer and the Welfs. Otto VIII murdered the German Hohenstaufen King Philip of Swabia and was executed in 1209, so there was no marriage.

Involvement in the politics of the Polish duchies In 1202, the Polish High Duke Mieszko III the Old died. He was from the Greater Polish branch of the royal Piast dynasty. Two opposing groups emerged: 1) Mieszko IV Tanglefoot (Henry's uncle), and Duke Władysław III Spindleshanks of Greater Poland (Mieszko III's son and successor), and 2) Dukes Leszek the White of Sandomierz, Konrad I of Masovia (sons of late High Duke Casimir II the Just), and Władysław Odonic (Władysław III's nephew). Henry once again remained neutral.

Władysław III Spindleshanks had assumed the throne at Kraków, but was deposed in 1206. Leszek became High Duke and Duke of Kraków. The loss of the Seniorate Province caused Władysław III to change his alliance, increasing his presence in West Pomerania. He proposed to Henry an exchange of territories: the Silesian Lubusz Land for the Greater Poland Kalisz region. Henry accepted the offer, but the exchange resulted in political confusion. Władysław Odonic had been expecting to inherit Lubusz and Greater Poland from his uncle Władysław III. Odonic counted on the support of the church, headed by Archbishop Henry Kietlicz of Gniezno. Władysław III had his two opponents, Odonic and the archbishop, exiled. Henry was now in a difficult situation. He owed a debt of gratitude to the archbishop, who helped him at the beginning of his reign, but he decided to support Władysław III. He gave the newly acquired Kalisz to Odonic, except for Poznań, causing a temporary rift between Henry and Władysław III. In 1208, the relationship was mended during a meeting in Głogów.

In 1210, Pope Innocent III excommunicated High Duke Leszek I. Mieszko IV Tanglefoot quickly conquered Kraków and took the title of High Duke. The excommunication bull was issued at the request of an anonymous Duke of Silesia, probably Henry (because Mieszko IV used the title Duke of Racibórz-Opole). The situation became quite confused and no one was sure who held the real power.

Archbishop Henry Kietlicz, who had returned from exile some time before, called the to try to find a solution to the situation. Henry, and the lesser Dukes Leszek I, Konrad I, and Władysław Odonic were present. Leszek and the other Piast princes bestowed a gift on the clergy, ensuring the integrity of the bishop's territorial possessions (the privilege wasn't signed by Henry or Władysław III, but they did comply with its provisions). Mieszko IV wasn't present in Borzykowa. While the other Dukes were in Borzykowa, Mieszko IV and his army invaded Kraków and took the capital without a fight. Mieszko IV only held Kraków for a year. Henry, although he was now the oldest of the lesser Dukes, did nothing. Leszek I the White returned to Kraków without any major difficulties.

After the papal bull affair, Henry supported peace and cooperation with High Duke Leszek and Duke Władysław III of Greater Poland. The pact was established in 1217 in a meeting in Danków, and then a year later in Sądowel. Each member of this Piast triumvirate (later including Leszek's younger brother Konrad of Masovia) brought some mutual benefits to the alliance. Władysław's inclusion brought about an immediate restitution of Lubusz and Leszek's formal sovereignty over the rest of the country. Over the next few years, the three dukes cooperated.

The main motive for the treaty between the three was the crusading expeditions against the pagan Baltic Old Prussians. These crusades, in 1222 and 1223, both failed despite the vast financial outlay. Henry then proposed bringing a contingent of Teutonic Knights to Poland. Duke Konrad I of Masovia put out the call and the knights entered Poland in 1226.

The First War of Lubusz Henry resigned his claim to Kraków because Margrave Konrad II of Lusatia seized Lubusz Land. Duke Władysław III gained possession of Lubusz in 1206, but lost it soon after. The possession of Lubusz directly affected Henry's sovereignty and he sent his forces to the Polish western border. Initially, he tried to settle the dispute peacefully, sending ambassadors to the court of Emperor Otto IV at Altenburg to obtain the return of Lubusz to Silesia. They returned without a response, and Henry organized an armed expedition. No military action was needed. On 6 May 1210, Margrave Konrad II died, and Henry took Lubusz and the Lusatian town of Gubin, which he held until 1218.

The Attempt to gain Kraków in 1225 and the struggles over Lubusz

In 1223, the Piast alliance was finally broken. In Greater Poland, Władysław Odonic and his brother-in-law, Duke Świętopełk II of Pomerelia took Ujście. Disputes with Władysław III effectively prevented the continuation of the treaties. In 1225, Henry broke the treaty and entered Kraków. When Landgrave Louis IV of Thuringia attacked Lubusz, Henry retreated from Kraków.

The struggles for Lubusz continued intermittently until 1230, when Margrave Louis IV's successor Henry Raspe resigned his rights over Lubusz in 1229 and sold his claim to the Magdeburg Archbishop Albert I of Käfernburg. Henry was finally able to add this strategically important area to his duchy, although he did so without the consent of Duke Władysław III of Greater Poland. Henry also managed to obtain another asset: a castle in Cedynia, conquered after a local conflict with Duke Barnim I of Pomerania.

The Congress of Gąsawa. Death of Leszek I the White

In 1227, Leszek I the White organised an assembly of Piast Dukes at Gąsawa to settle territorial disputes and the actions of Duke Świętopełk II. Władysław Odonic and Henry supported Leszek and his brother Konrad of Masovia. Władysław III of Greater Poland did not go to Gąsawa. Duke Świętopełk II, a member of the Pomerelian Samborides dynasty, had declared himself independent from Polish vassalage. The High Duke demanded a serious reprimand for Świętopełk, or his complete removal from the duchy. Świętopełk II (probably with the help of Władysław Odonic) attacked first, at Gąsawa. On 23 November 1227, Leszek the White and Henry were trapped in an ambush. Leszek was killed and Henry was seriously wounded. Peregrinus of Wiesenburg threw himself on Henry, saving Henry's life. A new power struggle for the Polish throne began.

Henry, Governor of Krakow Leszek I the White left a one-year-old son, Bolesław, and the Duke of Greater Poland, Władysław III, saw an opportunity to retake Kraków and the title of High Duke under the guise of regency. The Lesser Polish nobles sided with Leszek's brother, Duke Konrad I of Masovia. In the Duchy of Sandomierz Bolesław was declared the rightful heir under the regency of his mother Grzymisława of Łuck, with the help of local nobles. In Poland, Władysław III had the upper hand in the fight for Kraków, especially after the Congress of Cienia Pierwsza near Kalisz on 5 May 1228, where he granted several privileges to the church and promised to respect the old laws. Complications arose when his nephew Władysław Odonic rebelled against him. High Duke Władysław III focused his attention on Greater Poland and Henry was elected to rule Kraków as a Governor of the High Duke, not as High Duke, in recognition of his military support of Władysław III. The High Duke also promised that Henry and his descendants were to be the heirs of Greater Poland.

Loss of Lesser Poland and imprisonment After Leszek's death, a war between Henry and Duke Konrad I of Masovia erupted in 1228. Initially, Henry was successful as he repelled Konrad's forces at the Battles of Międzybórz, Skała and Wrocieryż (all in Lesser Poland). Then the situation changed drastically. Henry, a strong supporter of High Duke Władysław III, had difficulty ruling the Kraków nobility. Henry was governing both his Silesian Duchy and Kraków, and some Kraków nobles were not satisfied with the outcome of Henry's ruling, as mostly not used to his heavy-handedness in politics.

In 1229, Henry met with Konrad in Spytkowice. During mass, Konrad's knights took Henry prisoner and wounded several of his men. Henry was imprisoned in the Płock Castle, and Henry II the Pious, Henry's eldest surviving son and heir, became regent of the duchy.