Henn was born in Albert House, County Sligo, Ireland and educated in Fermoy and at St. Catharine's College, Cambridge, where he was Senior Tutor, 1945-47, and President, 1951-61.
Henn was born in Albert House. Henn was born in County Sligo. Henn was born in Ireland. Henn was born in educated in Fermoy and at St. Catharine's College, Cambridge. He was Senior Tutor. He was 1945-47. He was President. President was 1951-61.