The Thorold baronetcy, of Harmston in the County of Lincoln was created in the Baronetage of Great Britain on 9 September 1709 for George Thorold. The title became extinct on the death of the 2nd Baronet in 1738. A second creation on 14 March 1740 was for Nathaniel Thorold, a "distant cousin" of the 2nd Baronet. The title became extinct on his death in 1764.
Thorold baronets, of Harmston (1st creation, 1709) Sir George Thorold, 1st Baronet (c.1666–1722) Sir Samuel Thorold, 2nd Baronet (died 1738)
Thorold baronets, of Harmston (2nd creation, 1740) Sir Nathaniel Thorold, 1st Baronet (died 1764). He had inherited the Harmston estate from the 2nd Baronet of the 1st creation. A special remainder, to Charles Thorold, a remote cousin, third son of the 7th Baronet of the 1642 creation, came to nothing and the title became extinct.
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