Julia Calverley (died 1787) (1712–1787) Parents Sir Walter Calverley, 1st Baronet Julia Blackett Children Walter Trevelyan Frances Trevelyan Julia Trevelyan Susanna Trevelyan Sir John Trevelyan, 4th Baronet Charlotte Trevelyan Siblings Walter Calverley-Blackett Partners Sir George Trevelyan, 3rd Bt.