Born: July 22, 1855, Philadelphia, Pennsylvania.
Died: October 10, 1930, Philadelphia, Pennsylvania.
Buried: Laurel Hill Cemetery, Philadelphia, Pennsylvania.
Louis was the son of Gustavus Smith Benson and Margaretta Fitzgerald Dale Benson, and husband of Caroline Perot Warren.
He graduated from the University of Pennsylvania law school, but practiced law only seven years.
In 1877, he entered Princeton Theological Seminary, where his father was a trustee.
Upon graduation, Benson was ordained, then pastored at the Presbyterian Church of the Redeemer in Germantown, Pennsylvania.
He also became a leading authority in hymnology. His library eventually grew to 9,000 volumes.
In 1895, Benson helped edit The Hymnal of the Presbyterian Church in the United States of America.