Adelia B. Gammon (b. Brown) (1846-1891) was born in Yarmouth, Nova Scotia, Canada, and died in Boston, Massachusetts. In 1866 she married James E. Gammon, a blacksmith who later became a mining engineer, in Yarmouth, and they were living in Boston by the early 1870s. Gammon joined the Church of Christ (Scientist), in Boston on March 21, 1886. Two of her children, Antoinette "Nettie" Maude Trask (b. Gammon) and James Irving Gammon performed in the Children's Easter Concert, a Christian Science service held in Chickering Hall, on April 1, 1888.

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