Philip Sidney, 3rd Earl of Leicester
Lord Lisle married Lady Catherine Cecil , daughter of William Cecil , 2nd Earl of Salisbury , and his wife Lady Catherine Howard , in 1645 . Their children were Dorothy and Robert; the latter succeeded to his father's earldom . 
<triplet> William Cecil, 2nd Earl of Salisbury <subj> Lady Catherine Howard <obj> spouse <triplet> Lady Catherine Howard <subj> William Cecil, 2nd Earl of Salisbury <obj> spouse