Mary Bosanquet Fletcher, Methodist preacher and philanthropist (died 1815)

Mary Bosanquet Fletcher was an English preacher credited with persuading John Wesley, a founder of Methodism, to allow women to preach in public. She was born into an affluent family, but after converting to Methodism, rejected its luxurious life. She was involved in charity work throughout her life, operating a school and orphanage until her marriage to John Fletcher. She and a friend, Sarah Crosby, began preaching and leading meetings at her orphanage and became the most popular female preachers of their time. Fletcher was known as a "Mother in Israel", a Methodist term of honour, for her work in spreading the denomination across England.

Methodism, also called the Methodist movement, is a Protestant Christian tradition whose origins, doctrine and practice derive from the life and teachings of John Wesley. George Whitefield and John's brother Charles Wesley were also significant early leaders in the movement. They were named Methodists for "the methodical way in which they carried out their Christian faith". Methodism originated as a revival movement within Anglicanism with roots in the Church of England in the 18th century and became a separate denomination after Wesley's death. The movement spread throughout the British Empire, the United States and beyond because of vigorous missionary work, and today has about 80 million adherents worldwide. Most Methodist denominations are members of the World Methodist Council.

September 12 is the 255th day of the year in the Gregorian calendar; 110 days remain until the end of the year.