<P> The Sixth Crusade led by Frederick II , Holy Roman Emperor left Italy in 1228 . The death of al - Mu'azzam negated the proposed alliance with al - Kamil , who along with his brother al - Ashraf had taken possession of Damascus ( as well as Jerusalem ) from their nephew , al - Mu'azzam's son an - Nasir Dawud . However , al - Kamil presumably did not know of the small size of Frederick 's army , nor the divisions within it caused by his excommunication , and wished to avoid defending his territories against another crusade . Frederick 's presence alone was sufficient to regain Jerusalem , Bethlehem , Nazareth , and a number of surrounding castles without a fight : these were recovered in February 1229 , in return for a ten - year truce with the Ayyubids and freedom of worship for Jerusalem 's Muslim inhabitants . The terms of the treaty were unacceptable to the Patriarch of Jerusalem Gerald of Lausanne , who placed the city under interdict . In March , Frederick crowned himself in the Church of the Holy Sepulchre , but because of his excommunication and the interdict Jerusalem was never truly reincorporated into the kingdom , which continued to be ruled from Acre . </P>
<P> The Sixth Crusade led by Frederick II , Holy Roman Emperor left Italy in 1228 . The death of al - Mu'azzam negated the proposed alliance with al - Kamil , who along with his brother al - Ashraf had taken possession of Damascus ( as well as Jerusalem ) from their nephew , al - Mu'azzam's son an - Nasir Dawud . However , al - Kamil presumably did not know of the small size of Frederick 's army , nor the divisions within it caused by his excommunication , and wished to avoid defending his territories against another crusade . Frederick 's presence alone was sufficient to regain Jerusalem , Bethlehem , Nazareth , and a number of surrounding castles without a fight : these were recovered in February 1229 , in return for a ten - year truce with the Ayyubids and freedom of worship for Jerusalem 's Muslim inhabitants . The terms of the treaty were unacceptable to the Patriarch of Jerusalem Gerald of Lausanne , who placed the city under interdict . In March , Frederick crowned himself in the Church of the Holy Sepulchre , but because of his excommunication and the interdict Jerusalem was never truly reincorporated into the kingdom , which continued to be ruled from Acre . </P>
who had jerusalem at the end of the crusades
who had jerusalem at the end of the crusades
Frederick II , Holy Roman Emperor
Frederick II , Holy Roman Emperor