From his mother's first marriage, he had an elder half-brother, Roger Vaughan, a courtier and MP for Hereford.
He resigned this command following the Glorious Revolution, as he personally opposed William III of England taking the throne.
The couple had three children:[3] Cornewall died on 22 February 1717, and was buried six days later in the South aisle of Westminster Abbey.
[3][4] He left his Radnor estates to his eldest son and property in Herefordshire (Moccas Hall and Bredwardine) to Velters.
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