[1] Hubner was the proprietor of the Relay House on the Baltimore and Ohio Railroad during the American Civil War.

[1] In 1895, Hubner was one of the principal organizers of the American Bonding Company and served as its first president.

[1][2] Hubner served as the head of Springfield State Hospital in Sykesville, Maryland.

[1] Hubner married Mary A. Harken of Anne Arundel County in September 1863.

[1] Hubner died on September 8, 1920, after two operations at Maryland General Hospital in Baltimore.