He was born in Blair County, Pennsylvania, attended Lycoming College and moved to Davenport, Iowa in 1866; studied law; was admitted to the bar in 1867 and commenced practice in Davenport; moved to Missouri in 1869 and settled in Greenfield, Dade County, Missouri.

In Congress he was one of the managers appointed by the House of Representatives in 1905 to conduct the impeachment proceedings against Charles Swayne, judge of the United States District Court for the Northern District of Florida.

De Armond and his young grandson both died in a fire that destroyed his home in Butler, Missouri.

[1] He is buried in Oak Hill Cemetery.

De Armond's daughter Harriet was the first wife of Harvey C. Clark, who had studied law in De Armond's office.