Editing Hamilton Fish Armstrong (section)

==Personal life==
Armstrong married three times. Helen MacGregor Byrne became his wife in 1918; their only child, Helen MacGregor (later Mrs. Edwin Gamble), was born on September 3, 1923. Armstrong and Byrne divorced in 1938. Later that year, she married [[Walter Lippmann]], ending the friendship between the two men.<ref name=":2" />

He was born at 58 [[West 10th Street (Manhattan)|West 10th Street]] in New York City, and died at the same location.<ref name=":1" />

Armstrong married author [[Carman Barnes]] in 1945, a marriage which ended in a 1951 divorce. In that same year, Armstrong married Christa von Tippelskirch.