Jeremiah Rigdon was the leader of the Mormons at New Canaan. He is called their "Living Prophet", genuinely considered (by believers) to be the current prophet of God's will on earth. Though Jeremiah is only in his early thirties, the weight of his office can make him seem much older. He has long brown hair, white skin, and dresses simply in a white shirt and blue jeans.
When Jeremiah was in his twenties, he suffered a severe fever from which no one thought he would ever recover. While he was in his fever, he started babbling strange words that no one in New Canaan could understand. After coming out of his fever, he claimed that God had spoken through him and told him that he was the living prophet to replace Judah Black. Many of the Mormons in New Canaan did not believe this. They argued that God did not speak through the living prophets in such a manner. Jeremiah held to his convictions and watched as many of the Canaanites left with Bishop Mordecai. When Mordecai and a few others returned, he did not condemn them or mock their failure, but quietly welcomed them back.
From time to time, Jeremiah suffers fits similar to the one he experienced while in his fever. During these times, he frequently has visions of spirits speaking to him. Among the things he believes God has told him: "Because the men of New Canaan die often in the defense of the town, men are allowed to have multiple wives, that men and women should abstain from the use of drugs and alcohol to ensure clear-headed thought, and that people of all colors, shapes and sizes should be allowed into the New Canaan community if they have pure hearts".
Jeremiah Rigdon has not appeared nor is he mentioned in any published game. He was to appear only in Van Buren, the canceled Fallout 3 by Black Isle Studios. It is not certain if he will appear in any future Fallout game.
At some point in development Jeremiah's last name was changed from Maxwell to Rigdon which was chosen by Joshua Sawyer to echo Sidney Rigdon, who was one of the individuals involved in the Latter Day Saints "succession crisis."