Benjamin Franklin Flanders's brother was Wardwell Clement Flanders, father of Daniel Johannes Goos, Jr.'s wife, Florence Augusta Flanders, and Katherine Goos's husband, Willie Wardwell Flanders.

Louisiana Secretary of State, Benjamin Franklin Flanders, http://www.sec.state.la.us/43.htm:

        Benjamin Franklin Flanders, held important pro-Union posts before being appointed Governor by the New Orleans military district commander, General Philip Sheridan.
        During the war, as special agent of the Treasury Department of the Southern Region, Flanders earned commissions from the sale of confiscated cotton. After the war he led the movement to organize the Republican Party in Louisiana. As the first Republican Governor, Flanders supported black suffrage.
        But Flanders' short term in office featured much conflict among Republicans about control of the party and political patronage.
        The Governor resigned when Major General Winfield Scott Hancock, the new military district commander, removed Radical Republicans appointed by Flanders from state offices.
        Two years later, Governor Henry Clay Warmoth appointed Flanders Mayor of New Orleans. He was later elected to that position.
        Flanders died on his plantation in Lafayette Parish in 1896.

See also:

Governor Benjamin Franklin Flanders, http://www.enlou.com/people/flandersbf-bio.htm

Benjamin Franklin Flanders, http://www.civilwarlandscapes.org/cwla/per/civil/bff/bfff.htm

Administrations of the Mayors of New Orleans, Benjamin Franklin Flanders (1816-1896), http://www.nutrias.org/~nopl/info/louinfo/admins/flanders.htm