No definitive documentation exists in either location to provide clear evidence of his birthplace .
A competing theory focuses on his mention of the Isle of Man and argues that he belonged to a Manx branch of the Standish family .
No definitive documentation exists in either location to provide clear evidence of Standish 's birthplace .
A competing theory focuses on his mention of the Isle of Man and argues that he belonged to a Manx branch of the Standish family .