There is also the possibility that captain Charles Radcliffe 1707 is Charles Radcliffe and Mary Sayle"s father.

I would have thought so as it is his family that claim to be connected with the Derwentwater Earls, I don't know how but it was drummed into our family that we came from the line that claims it.

This family, which claimed to be connected with the Radcliffe’s of Derwentwater, was an important one in the Island during the 16th, 17th, and 18th centuries. The Revd. Robert Radcliffe,1,2,3 Vicar of Patrick and Vicar General (born 1703, died 1769) was the last of the family to hold this property. He and his brother Captain Thomas, who held the property before him,4 both died without progeny. They had four sisters, and the eldest, who succeeded, married James Parr, eldest son of the Deemster. They had eight children, the eldest called Caesar, but they all died young, so the property came to the descendants of the second sister, who married a Quirk of BallaVarr.5 About 1870, the property was bought from the Quirk family by Robert Corrin of Peel.