Marguerite Blakeney was the daughter of Percy Armand Blakeney and Alexandra Grosvenor. She married Edward Rutherford, 13th Baron Tennington and they had the following children at least one son (the 14th Baron Tennington) and a number of daughters (notably including Alice Rutherford, mother of Tarzan). The family are discussed, in a limited fashion, by Philip José Farmer in Tarzan Alive.

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