. It has sometimes been used as a synonym for O'Brien, though it is of different origin.
(Irish: Cill Chainnigh), the former Kingdom of Osraige (Ossory), located in Southeastern
, where bearers of the surname settled in the 13th century.
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Some of the first settlers of this family name or some of its variants were: Edward Bryan, who settled in Virginia in 1652; Ann Bryan, who settled in Boston in 1744; Jane Bryan, who immigrated to Boston in 1745; John Bryan, who immigrated to Boston in 1765.