After the Bourbon Restoration, he returned to Haiti with his mother and sisters where he quickly entered in the service of Alexandre Pétion's government. In 1824 he visited the United States, to promote the emigration of free Blacks to Haiti.
Pierre Joseph Marie Granville, known as Jonathas Granville (1785–1839) was a Haitian educator, legal expert, soldier and a diplomat. He was born a free mulatto in Saint-Domingue.