Birth Name: Liam Thomas Garrigan
Place of Birth: Hull, Yorkshire, England, U.K.
Date of Birth: 17 October, 1981
Ethnicity: Irish, likely Welsh and English
Liam Garrigan is a British actor. Liam played King Arthur in both the series Once Upon a Time and the film Transformers: The Last Knight (2017).
His surname is Irish.
Liam’s paternal grandparents were named Thomas Garrigan and Mary Helen “Maisie” Phillips.
Source: Obituary of Liam’s paternal grandmother, Mary Helen “Maisie” (Phillips) Garrigan – http://dct.myfamilyannouncements.co.uk