Stephen Grellet (28 October 1772 – 16 November 1855) was a prominent French-American Quaker missionary.  He was was born Étienne de Grellet du Mabillier in Limoges, France, the son of Antoine Gabriel Grellet, a counsellor of King Louis XVI   Raised as a Roman Catholic, he was educated at the Military College of Lyons, now the Institut d'études politiques de Lyon, and at the age of 17 he entered the personal guard of the king. During the French Revolution he was sentenced to be executed, but escaped and eventually fled Europe to Demerara in South America with his brother Joseph in 1793, then to the United States in 1795. ... He decided to join the Quakers (Society of Friends).  [...]

     Grellet became involved in extensive missionary work in prisons and hospitals across North America and most of the countries of Europe, and was granted meetings with many rulers and dignitaries, including Pope Pius VII, Tsar Alexander I, and the Kings of Spain and Prussia. He encouraged many reforms in educational policies and in hospital and prison conditions.

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