What are the main events and people in the religious crusades to the Holy Land?It is to support class work so it just has to be brief but accurate.

Among the more important names are Pope Urban II, who
preached the First Crusade at Cluny, France; Peter the Hermit, who led the Peasants
Crusade before the First Crusade was launched, Frederick Barbarossa and Richard I (Coeur
de Lion) who participated in the Second Crusade, and the Arabic commander,
Saladin.

Among the more important events:  The First
Crusade was the only one to succeed. The Crusaders set up a Crusader state in Palestine,
but were later overrun by the Muslims under Saladin. The Second Crusade, under Frederick
and Richard failed when Frederick died en route, and Richard plundered other areas. The
Fourth Crusade was diverted en route and never reached the Holy Land, but instead
attacked and sacked Constantinople. The city was so weakened by the attack that it never
recovered; and ultimately fell to the Turks in 1453.

Among
the other oddities of the Crusades was the Children's Crusade, preached by two young
boys in Cologne and Paris. The children expected the Mediterranean to part for them, as
Moses had parted the Red Sea, but were disappointed when it did not happen. Two
apparently well meaning gentlemen offered to help them, but they were misled. One ship
carrying the children was lost at sea; the rest were sold to the Muslims as
slaves.