Born: October 16, 1822, New York City.
Died: February 7, 1895, Summit, New Jersey.
Buried: The Evergreens Cemetery, Brooklyn, New York.
Alexander was the son of William Robert Thompson and Janette Nexsen; husband of Mary Carpenter (married October 26, 1848); and grandson of Revolutionary War officer Captain Alexander Thompson, and of New York merchant Elias Nexsen.
He was educated at New York University (AB 1842, AM 1849, DD 1866) and Princeton Theological Seminary (1842–45).
He was ordained and entered the ministry of the Reformed Dutch Church in 1845.
He worked as an editor and author; president of the Reformed Dutch Church Publication Board; and member of the Council of New York University, 1872–91.
He served various pastorates, including East Brooklyn; St. Paul’s (R.P.D.), New York City; the North Reformed Church, Brooklyn (1874); Morristown, New Jersey; Bridgeport, Connecticut, and Staten Island, New York.
During the American civil war, he helped raise troops, notably the 17th Connecticut Volunteer Infantry. He was also a chaplain with the rank of captain on the staff of Governor Andrews of Massachusetts; Chaplain of the New England Relief Rooms in New York City (1863–65), and of Roosevelt Hospital (1873–95).
Thompson was joint editor of the Reformed Dutch Hymns of the Church (New York: 1869) and Hymns of Prayer and Praise (1871). He contributed original hymns and translations from the Latin to these collections, to Schaff’s Christ in Song (1869), and to the Sunday School Times (Philadelphia, Pennsylvania: 1883).