Baron Clermont
Chichester Fortescue was the great-grandson of John Fortescue , husband of Susannah , daughter of Sir John Chichester and sister of Arthur Chichester , 1st Baron Chichester and Edward Chichester , 1st Viscount Chichester , ancestor of the Marquesses of Donegall ( hence the common first name of Chichester ) . 
<triplet> Arthur Chichester, 1st Baron Chichester <subj> Edward Chichester, 1st Viscount Chichester <obj> sibling <triplet> Edward Chichester, 1st Viscount Chichester <subj> Arthur Chichester, 1st Baron Chichester <obj> sibling