Son of unknown father and mother. He was born the 10 october 1875 in Brooklyn, Kings, New York. Harold Treadway is deceased the thursday 11 august 1960 aged of 84 years old.
a. Harold Treadway is married with Ruth Underhill, daughter of Walter Mitchell Underhill and Zoe Dana. She was born the monday 8 june 1874 in Englewood, Bergen, New Jersey. Ruth is deceased in Philadelphia, Philadelphia, Pennsylvania the tuesday 30 november 1943 aged of 69 years old.
No children were born from this union.