Roger Keynes
His mother was The Honorable Ann Pinsent Adrian , who was the daughter of Edgar Adrian , 1st Baron Adrian and his wife Hester ( née Pinsent ) . 
<triplet> Edgar Adrian, 1st Baron Adrian <subj> Hester (née Pinsent) <obj> spouse <triplet> Hester (née Pinsent) <subj> Edgar Adrian, 1st Baron Adrian <obj> spouse