Leo A. Seltzer[1][2][3] (April 5, 1903 – January 30, 1978) is generally credited as the creator of the sport of roller derby, and was the founder and head of the original Roller Derby league from 1935 until his son Jerry Seltzer took over the business in 1958.
^The nickname "Bromo," in reference to Bromo-Seltzer antacid, appeared in Time, but according to his son Jerry in 2010, nobody ever actually called his father by that name.