Baldwin III of Jerusalem
In 1152, Fulk intervened in the dispute between King Baldwin III of Jerusalem and his mother Melisende of Jerusalem. Baldwin III had inherited the throne at the age of 13 on the death of his father, King Fulk, in 1143, but Melisende continued to rule as regent even after Baldwin passed the age of majority in 1148. The dispute led to armed conflict in 1152, and Fulk's attempts to negotiate peace failed. Baldwin eventually was victorious in the dispute.