Louis the Child (Italian: Ludovico or Luigi; 4 February 1338 – 16 October 1355) was King of Sicily (also known as "Trinacria") from 15 September 1342 until his death.

On 12 February, Peter issued a privilege to the city of Catania exempting it from the payment of the customary hospitality to the royal court.

He also credited the intervention of Catania's patron saint, Agatha, on whose feast the child was born, for the successful delivery of a boy.

[1] On 10 September John ordered the citizens of Palermo to nominate their representatives to swear the oath of fealty at Louis's coronation.

[1] Towards the end of 1344 negotiations were begun to marry Louis to Constance, the newborn daughter of Peter IV of Aragon.

[1] In May 1348 Louis was residing in Messina when he confirmed the succession of John's son Frederick to the duchies of Athens and Neopatria and the marquisate of Randazzo.

The Sicilian families are sometimes called filoangioini (pro-Angevin, the house that ruled Naples) and the Catalans filoaragonesi (pro-Aragonese).

Initially, Blasco sent Louis to Catania, but the court stopped at Taormina early in November and then moved to the castle of Montalbano Elicona.

Around this time, between May and July, the queen mother died and her role was taken up by Louis's older sister, the abbess Constance.

[1] On 23 February 1352, after Louis had turned fourteen, Matteo pushed him to write a letter to the people of Catania declaring his intention to begin his personal rule.

[1] On 13 June the king was on the plain of Milazzo, but he had soon returned to Taormina, where the Chiaramonte prevented him from meeting with the nominal regent, Blasco, in spite of the accord that he been reached through the intervention of his sister Constance, who was also with him.

[1] Support for the king had been slipping among his erstwhile allies, and on 17 July a popular riot in the city of Messina opened the gates to the armed forces of Enrico Rosso and Count Simone Chiaramonte.

[1] In April 1354, the Neapolitans, with Grand Seneschal Niccolò Acciaiuoli at the head of a small fleet, invaded Sicily and subjugated Palermo and most of the interior in alliance with the Chiaramonte and the other filoangioini families.

The next day (17 October) his funeral procession passed through the streets to the cathedral of Sant'Agata, where his body was placed in the same tomb as his grandfather, Frederick II (III), and uncle, John of Randazzo.

[1] On 10 October 1355, days before his death, Eleanor had written to Louis to reopen the negotiations for his marriage to Constance, her stepdaughter.