Richard Adrian, 2nd Baron Adrian

His older sister, Anne Pinsent Adrian, married the physiologist Richard Keynes (a direct descendant of Charles Darwin) while his twin sister, Jennet Adrian, married Peter Watson Campbel.

She was the daughter of the architect Alban Caroe and her grandfathers were W. D. Caröe and William Bragg.

They had no children, and on his death in 1995, the title Baron Adrian became extinct.

He was the great-uncle of Skandar Keynes, who had a leading role in the Chronicles of Narnia films.

Adrian was elected a Fellow of the Royal Society for his contributions to physiology in 1977.