She was the daughter of Bohemund VI of Antioch and the sister of Bohemund VII of Tripoli. When Bohemund VII died in 1287, their mother Sibylla of Armenia appointed as regent Bertrand of Giblet. He proved to be very unpopular with the commune of the city, who created their own administration. Lucia then came to Tripoli from Auxerre, where she had married Narjot de Toucy, to take control of the county, although she was opposed by both the commune and the Genoese. The Genoese, led by Benedetto Zaccaria, tried to install a podesta, an official administrator from Genoa, which would have made Tripoli essentially a Genoese colony. At this the leader of the commune consented to acknowledge Lucia, but Lucia, unexpectedly allied herself with the Genoese instead.
The Venetians and Pisans, who also had trading links with Tripoli, were shocked at this and supposedly conspired with the Mameluk sultan Qalawun to attack the city. Lucia allied with the Mongols, who, knowing that Tripoli was too weak to defend itself even with their help, asked for support from Europe, although no aid was to be found there. Qalawun besieged Tripoli for one month in 1289 and captured it on April 26. Two years later Acre, the last Crusader outpost in the Holy Land was also captured.
Although he could have claimed the county through her, Lucia's husband never came to Tripoli, as he was attending to business in the Kingdom of Naples, where he died in 1292. Their son was Philip of Toucy. Lucia's fate is unknown.
She was the daughter of Bohemund VI of Antioch and the sister of Bohemund VII of Tripoli.
Lucia then came to Tripoli from Auxerre, where she had married Narjot de Toucy, to take control of the county, although she was opposed by both the commune and the Genoese.
Lucia allied with the Mongols, who, knowing that Tripoli was too weak to defend itself even with their help, asked for support from Europe, although no aid was to be found there.
The County of Tripoli continued to exist as a vassal state of the Kingdom of Jerusalem, while within the county itself the Knights Hospitaller were given an autonomous castle in 1142, Krak des Chevaliers.
Count Raymond III, who reigned in Tripoli from 1152 to 1187, was an important figure in the history of the Kingdom to the south, due to his close relationship to its kings (his mother Hodierna was a daughter of Baldwin II of Jerusalem) and to his own position as Prince of Galilee through his wife.
Raymond IV of Tripoli (1187–1189), son of Bohemund III of Antioch.