Joseph Wadham married Dorothy Wilton on 9th Oct 1675 at St Brock Cornwall. He died 1707 Liskeard Cornwall. The Parochial History of Cornwall quotes Joseph Wadham as being the last of that family, founders of Wadham College Oxford. Nicholas Wadham & his wife Dorothy Petre founded Wadham College, but I do not know exactly where Joseph fits in. As far as I can see Nicholas was from the Somerset family and died in 1609 ?? Dorothy Wilton is part of the large 'Wilton's of Cornwall' clan, her Father being John Wilton c1607, his Father Robert c1567.