Baldwin I of Jerusalem, born in 1058, was a prominent figure in the history of the Crusades, serving as the first count of Edessa from 1098 to 1100 and later as king of Jerusalem from 1100 until his death in 1118. He was the youngest son of Eustace II, Count of Boulogne, and Ida of Lorraine. His marriage to Godehilde of Tosny, a Norman noblewoman, further solidified his status in the region.
In 1096, Baldwin received the County of Verdun but soon joined the crusader army led by his brother, Godfrey of Bouillon. He quickly distinguished himself as a successful commander during the First Crusade. While the main army advanced through Asia Minor in 1097, Baldwin, alongside the Norman Tancred, embarked on a separate campaign against Cilicia, which led to a significant rivalry between the two leaders.
On March 10, 1098, Baldwin seized Edessa, establishing the first Crusader state after being invited by Thoros of Edessa to combat the Seljuks. To strengthen his rule, he married the daughter of an Armenian ruler, known as Arda. His strategic support during the siege of Antioch and his defense of Edessa against Kerbogha showcased his military prowess and commitment to the Crusader cause.
Following the death of Godfrey of Bouillon in 1100, Baldwin was urged to claim Jerusalem, which he did with little resistance, being crowned king in Bethlehem on December 25. His reign saw the capture of key coastal cities, including Arsuf, Caesarea, Acre, Beirut, and Sidon, although attempts to take Ascalon and Tyre were unsuccessful. Baldwin's victory at the third battle of Ramla in 1105 effectively halted major Egyptian campaigns against his kingdom.
As the only crowned monarch in the Latin East, Baldwin asserted his authority over other crusader rulers, with Baldwin II of Edessa and Bertrand, Count of Toulouse, swearing fealty to him. He actively supported his allies against Mawdud, the successor to Kerbogha, and fortified Oultrejordain to control vital trade routes. Baldwin I's life came to an end during a campaign against Egypt in 1118, leaving a lasting legacy in the region.