Probably the most reliable account of this family is in 'Manx Families' by A.W. Moore, 1889, which includes all sources for the information given. Radcliffe of Knockaloe.
There is a transcript on Frances Coakley's website: http://www.isle-of-man.com/manxnotebook/famhist/families/awm1889/notes_rd.htm

There is detailed information about the Black family in Constance Radcliffe's book 'Ramsey', as Averil said.

These two sources would answer all your questions.

Sue