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.
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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.