He stayed on with his masters family until their deaths. He then joined a privatising expedition, but after being cheated of his share of the prize money he let to serve a wine merchant. He enlisted in the 28th foot in the British Army where he served in Cuba and Martinique.
He came to England in 1762. Here too, he was cheated out of money, 19 guineas by his landlady. He was shocked- that the people of a Christian country could be so dishonest. He moved to London and married a poor English woman named Betty. Throughout their lives together they lived in poverty.
It seems that during this time he was writing his memoirs
and they appeared as the narrative of James Albert Ukawsaw Gronniosaw an
African Prince. The book was written in the later years of his life,
and after its publication nothing more is known of his life.