Coler was born on October 9, 1868, in Urbana, Illinois, the son of William N. Coler and wife. The elder Coler established a banking house after the Civil War and brought his family to Brooklyn.[1]
Coler and Emily Moore, the daughter of Mr. and Mrs. Benjamin Moore, were married on October 1, 1888. He died on June 12, 1941, in Brooklyn, and she died on August 23, 1941, in the same hospital. They had a son, Eugene Bird Coler.[2][3]
He was the author of Commercialism in Politics, Two and Two Make Four, He Made Them Twain, and other sociological works.[1]
In 1927, Coler, then the commissioner for public welfare in New York City, investigated "The Santa Claus Association" of John Duval Gluck. The association became embroiled in controversy as a result of dubious fundraising and accounting practices.[4]