On John 's early death in 1731 , they were claimed by his uncle , Charles Radclyffe , titular 5th Earl .
Despite having been stripped of his titles through the attainder , his only son John , titular 4th Earl of Derwentwater , continued to use them .
On John 's early death in 1731 , they were claimed by son 's uncle , Charles Radclyffe , titular 5th Earl .
Despite having been stripped of his titles through the attainder , his only son John , titular 4th Earl of Derwentwater , continued to use them .