Joseph Priestley (1733-1804) was an English chemist, natural philosopher, and separatist theologian. He helped found Unitarianism in England.
Joseph Bretland (1742-1819) was an English dissenting minister.
Lant Carpenter (1780-1840) was an English educator and Unitarian minister.
Raja Rammohun Roy (1772?-1833) was an Indian social reformer. He co-founded the Calcutta Unitarian Society.
Laura Dewey Bridgman (1829-1889) was an American deafblind woman.
Mary Carpenter (1807-1877) was an English social reformer. Her father was Lant Carpenter (1780-1840).