Alan IV de Rohan, called the Young (c. 1166 – 1205), was the eldest son of Alan III, Viscount of Rohan and Constance of Penthièvre. He was 4th Viscount of Rohan and Lord of Corlay. He took part to the Third Crusade.
Life
Alan married Mabilla of Fougères, a daughter of Raoul II, Baron of Fougères, Grand Seneschal of Brittany, Crusader, and Joan of Dol. She died before 1198.
They had six children:
Geoffrey, 5th Viscount of Rohan, died without issue
Alix of Rohan
Catherine of Rohan
Conan of Rohan (1190 - 1220)
Oliver I, 6th Viscount of Rohan, died without issue
Alan V, 7th Viscount of Rohan