Tregenza is a Cornish surname. It derives from Tregenza in the parish of Creed; Tregenza is formed from the elements "tre" (homestead) and "kensyth" (meaning unknown).Hanks, Patrick, et al. (2002) The Oxford Surnames Companion. Oxford U P; p. 620 Tregenna, Tregensoe, Tregensowe, and Tregenzo are possibly related names.
Notable people with the surname include: Norman Tregenza, Republican member of the New Hampshire House of Representatives Rob Tregenza (born 1950), American cinematographer and film director Rod Tregenza (born 1979), Australian rules footballer Sharon Tregenza, British children's author Simon Tregenza (born 1971), Australian rules footballer Jo Tregenza (born 1965), Associate Professor at Sussex Univerity, President of United Kingdom Literacy Association
See also Tregenza Roach, Kittitian-American politician, attorney, and former journalist Henry Tregenza Jullion, Anglican priest and author Alberto O. Treganza, American architect and ornithologist Ware & Treganza, American architectural firm
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