Sigmund Eisner was born in Bohemia to a Jewish family and educated in public schools there.

Sigmund Eisner (and his family) took great interest in civic and social affairs.

Sigmund was governor of the Monmouth Memorial Hospital and the State Home for Boys at Jamesburg, New Jersey.

His personal interests led him to membership in the Free and Accepted Masons, Ancient Order Nobles of the Mystic Shrine; the Benevolent and Protective Order of Elks; and the Monmouth County Boat Club.

Sigmund married Bertha Weis and they had four sons: H. Raymond, J. Lester, Monroe, and A. Victor.

[2] Monroe Eisner, the third son, was also born in Red Bank, graduating Phillips Exeter in 1910 and Harvard in 1914.