John Wyckoff Hegeman was born on 8. Dec. 1876 at New York. He was the son of
Ferdinand Suydam Hegeman and
Helen Ann Wyckoff. John Wyckoff Hegeman was shown in the census on 6. Jun. 1900 as a chemist.
John Wyckoff Hegeman appeared on the census of 6. Jun. 1900 at with his parents, Brooklyn, Kings County, New York. John Wyckoff Hegeman was shown in the census on 20. Apr. 1910 as a chemist, soap factory.
John Wyckoff Hegeman appeared on the census of 20. Apr. 1910 at with his parents, Brooklyn, Kings County, New York. He married
Amy Louise Lamont, daughter of
(Unknown) Lamont and
Hattie (Unknown), on 12. Oct. 1910.

John Wyckoff Hegeman was shown in the census on 2. Jan. 1920 as a chemist, soap factory.
John Wyckoff Hegeman and
Amy Louise Lamont appeared on the census of 2. Jan. 1920 at Watertown, Middlesex County, Massachusetts. John Wyckoff Hegeman was shown in the census on 10. Apr. 1930 as a superintendent, soap manufacturing.
John Wyckoff Hegeman and
Amy Louise Lamont appeared on the census of 10. Apr. 1930 at Watertown, Middlesex County, New York. John Wyckoff Hegeman died on 28. Apr. 1938 at age 61.