He protested in 1568 to Lord Burghley that his religious views were needlessly suspected, and wrote a treatise on natural and moral philosophy for his youngest sister, Catharine, wife of Henry Berkeley, 7th Baron Berkeley,[REF] dated from Trinity Hall 6 August 1569; she supported him in some hard times [REF].
After the execution of the Duke, his aforementioned sibling, Howard retired to Audley End, and directed the education of his brother's children.