He is known as the "Apostle of Mauritius" due to his tireless work in aiding the poor and ill. Laval also educated the flock he was assigned to for those people were uneducated and were former slaves for the most part.

[1] His skills in medicine made him a distinguished figure in the region since his expertise allowed him to tend to those who suffered illness that manifested more so during times of an epidemic.

[1] But he became more vain and was ignoring the spiritual things in life as he served in medicine from September 1830 to April 1834.

He lived with them and learned their language while also fasting when supplies were short; he slept in a packing crate.

[1] The funeral oration commented on the words of Isaiah: Evangelizare pauperibus misit me — "He sent me to announce the Gospel to the poor".

The cause for beatification commenced in both Évreux and Port Louis on a diocesan level before theologians investigated and approved his spiritual writings on 9 August 1916.

The miracle that led to his beatification was the 17 July 1923 cure of Joseph Edgradi Beaubois - an Anglican who later converted - from acute eczema on his face and neck.

The date of Laval's death has become an annual celebration of sorts in which it was marked with a festival and a procession to the site of his tomb.

On an annual level offerings and ex votos are placed at the site of his tomb from the night of 8 September until the end of his feast.