Mahlon Day Sands

[1] His maternal grandfather, and namesake, was the children's book publisher, printer, and bookseller, Mahlon Day.

Mary was also a niece of banker Levi P. Morton, who later served as Vice President of the United States under Benjamin Harrison.

Together, Mary and Mahlon were the parents of:[3] Sands died in London on May 7, 1888, after a horse fell while he was riding on Rotten Row and rolled onto him, fracturing his skull.

[12] His widow, a close friend of the Queen Alexandra, died in 1896 from heart disease at her residence in London on Portland Place.

After a funeral at St George's, Hanover Square, her body was sent back to the United States just like her husband's had.