On 25 July 1899, at Holy Trinity Church, Sloane Street, Cadogan Square in London, England, de Meyer married Donna Olga Caracciolo, an Italian noblewoman who had been divorced earlier that year from Marino Brancaccio; some said she was a goddaughter of Edward VII.
The couple reportedly met in 1897, at the home of a member of the Sassoon banking family, and Olga would be the subject of many of her husband's photographs.

The de Meyers' marriage was one of convenience rather than romantic love because the groom was homosexual and the bride was bisexual or lesbian.
As Baron de Meyer wrote in an unpublished autobiographical novel, before they wed, he explained to Olga "the real meaning of love shorn of any kind of sensuality".
He continued by observing, "Marriage based too much on love and unrestrained passion has rarely a chance to be lasting, whilst perfect understanding and companionship, on the contrary, generally make the most durable union."

After the death of his wife in 1931, Baron de Meyer became romantically involved with a young German, Ernest Frohlich (born circa 1914), whom he hired as his chauffeur and later adopted as his son.
The latter went by the name Baron Ernest Frohlich de Meyer.
On 25 July 1899, at Holy Trinity Church, Sloane Street, Cadogan Square in London, England, de Meyer married Donna Olga Caracciolo, an Italian noblewoman who had been divorced earlier that year from Marino Brancaccio; some said she was a goddaughter of Edward VII. The couple reportedly met in 1897, at the home of a member of the Sassoon banking family, and Olga would be the subject of many of her husband's photographs.
The de Meyers' marriage was one of convenience rather than romantic love because the groom was homosexual and the bride was bisexual or lesbian. As Baron de Meyer wrote in an unpublished autobiographical novel, before they wed, he explained to Olga "the real meaning of love shorn of any kind of sensuality". He continued by observing, "Marriage based too much on love and unrestrained passion has rarely a chance to be lasting, whilst perfect understanding and companionship, on the contrary, generally make the most durable union."
After the death of his wife in 1931, Baron de Meyer became romantically involved with a young German, Ernest Frohlich (born circa 1914), whom he hired as his chauffeur and later adopted as his son. The latter went by the name Baron Ernest Frohlich de Meyer.
Adolph de Meyer