John F. Kennedy | Pope John Paul II | Elton John | John | John Lennon | John Wayne | John McCain | John Kerry | John Cage | Olivia Newton-John | John Williams | John Peel | John Adams | John Steinbeck | John Travolta | John Milton | John Zorn | John Marshall | John Howard | John Singer Sargent | John Ruskin | John Updike | John Maynard Keynes | John Coltrane | John Cleese | St. John's | John Waters | John Lee Hooker | John Huston | John Ford |
He was the son of Prince Simon Sidamon-Eristoff, a Georgian military officer, who emigrated to the United States after the Bolsheviks invaded Georgia in 1921 and Anne Tracy, a descendant of John Bigelow, an American diplomat in the mid-19th century.
John Bigelow, Jr. whose diplomat father John Bigelow was a close friend with Ord's father General Otho Cresap Ord. John Bigelow had once dated Ord's elder sister Roberta (Bertie) and despite encouragements from both families the relationship waned.
In 1926, Simon Sidamon-Eristavi, then a widower, married, in New York City, his second wife, Anne Tracy (1890–1978), a descendant of John Bigelow, an American diplomat in the mid-19th century.