Bob, if you are referring to Margaret Radcliffe, the mother of William Kennish bapt 24 Feb 1799 Maughold, there was a lot of discussion a few years ago about which family this Margaret came from. There were a number of online US trees which had given incorrect parents for her (proved to be a different Margaret Radcliffe by wills etc.) but, if I remember rightly, we never did discover the correct Radcliffe family for the mother of William Kennish.
It shouldn't be difficult to trace Ballagorry Beg Kennish descendants through censuses and from their details given in the Radcliffes' Maughold book p.290.

Sue