Sixth Crusade

The Sixth Crusade began in 1228 as an attempt to reconquer Jerusalem. It began only seven years after the failure of the Fifth Crusade in 1221.

Frederick II, Holy Roman Emperor, had attempted to join the Fifth Crusade, but Pope Innocent III prevented him from participating, fearing that Frederick would undermine papal authority. However, Frederick again promised to go on a crusade after his coronation as emperor in 1220 by Pope Honorius III, and he did send a small army to help the Fifth Crusade.

In 1225 Frederick married Yolande of Jerusalem (also known as Isabella), daughter of John of