Friar Jacomo is a member of one of the Christian monasteries in Malta, and after Barabas engineers the deaths of Lodowick and Mathias, Abigail appeals to Jacomo to join the nunnery for real as penance for her sins. Like Friar Bernardine, Marlowe implies many times that Jacomo ignores his vows of celibacy and regularly has sex with the Catholic nuns, and Jacomo frequently disregards his other priestly oaths as well, such as his vow of poverty. After Abigail joins the nunnery, Barabas blames Jacomo for her betrayal and swears revenge. Barabas promises Jacomo that he will join his parish and donate his fortune to the church coffers, but then Barabas and Ithamore strangle Friar Bernardine and frame Jacomo for his murder. Jacomo is ultimately hanged, and like Bernardine, he serves to embody religious hypocrisy and greed.