Byron King-Noel, 12th Baron Wentworth (1836-1862), normally styled Viscount Ockham, was the son of the 1st Earl of Lovelace and his wife Ada Lovelace. He inherited the Barony of Wentworth from his maternal grandmother, but predeceased his father, and his titles and claim to his father's titles passed to his younger brother.
Although Viscount Ockham was unmarried and had no legitimate issue, Tarzan Alive reveals that he had an affair with Joane Clayton, daughter of the 4th Duke of Greystoke which resulted in an illegitimate son, John Byron Wentworth, better known as Lord John Roxton. Joane went on to marry the 14th Duke of Denver, who adopted her son.