Sv. Louis of Toulouse was the great-grandson of the Croatian-Hungarian King Bela IV, and it was precisely this kinship that led his family to the right to the Croatian-Hungarian throne.
On August 19, 1297, St. died. Louis of Toulouse, a member of the famous Anjou dynasty, which once ruled Croatia and Hungary. Sv. Louis of Toulouse was the son of the Croatian-Hungarian princess Marija Arpadović, who was the daughter of King Stjepan V. Arpadović and the grandson of the famous Bela IV. which gave Gradec near Zagreb the status of a free royal city.
So, St. Louis of Toulouse was the great-grandson of the Croatian-Hungarian King Bela IV, and it was precisely this kinship that led the Anjouans to the Croatian-Hungarian throne. And indeed, the elder brother of St. Louis was proclaimed King of Hungary and Croatia (his name was Karlo Martel Anžuvinac). At the same time, the Anjouans ruled in the Kingdom of Naples. When Charles Martel of Anjou died, St. Louis was the next brother in the line of succession. Nevertheless, he renounced the inheritance of the royal crown and instead became a Franciscan. In 1297 he was appointed bishop of the city of Toulouse (the first bishop of that city was the famous St. Saturninus). In the episcopal office of St. Louis of Toulouse reportedly soon gained respect for his advocacy for the poor, feeding the hungry, and self-denial. However, perhaps precisely because of exhaustion, he soon died – at the age of only 23. It is possible that the cause of his death was typhus. His younger brothers achieved great secular honors – one brother became king of Naples, another title emperor of Constantinople, and a third count of Provence.