Godfrey's army started its journey from Lorraine in August 1096. Over the course of three years, his and other armies of crusaders suffered many hardships and loss, and fought many battles and conducted several sieges. It is something of a miracle that the crusaders ever made it into the Holy Land as a fighting force capable of success.
Godfrey died in 1100, and his brother Baldwin was crowned the first Latin King of Jerusalem on December 25, 1100.
Though there were other Crusades, none were as successful as the First, which gained its principal aim of liberating the holy sites from infidel control, and of protecting Christians from their sufferings under Seljuk Turk rule.
The holy city would fall to the Mohammedans in 1187, but the Kingdom itself endured for nearly 200 years, until the fall of Acre in 1291.