A. B. (Albert B.) Simpson (1843-1919) was born in Bayview, Prince Edward Island, Canada, and died in Nyack, New York. He was a well known preacher, theologian, and author. In 1865 he married Margaret L. Simpson (b. Henry). The same year he graduated from Knox College in Toronto, Ontario, Canada, was ordained a Presbyterian minister, and became the pastor of Knox Presbyterian Church in Hamilton, Ontario. Simpson immigrated to the United States in 1873 and became the pastor of Chestnut Street Presbyterian Church in Louisville, Kentucky. He was then called to New York, New York, in 1880 to serve as pastor of the Thirteenth Street Presbyterian Church. Soon thereafter Simpson experienced what he described as a divine healing resulting in a religious conversion. He was baptized in the Baptist church and resigned his Presbyterian pastorate. In 1881 he founded the Gospel Tabernacle, an independent evangelical ministry, and in 1882 he founded the Missionary Training Institute, both in New York City. In 1897 he founded and became president and pastor of the Christian and Missionary Alliance, serving in those capacities until 1918. He authored approximately 30 books, articles, poems, and hymns between 1885 and 1919, and several more of his writings were published posthumously.

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