Mammy Ruggles Tent #50 was instituted May 17th, 1937. Mammy Ruggles was a nurse who tended to wounded Union soldiers on Penn commons, a hospital based in York, Pennsylvania. Due to her many acts of kindness and mercy, the soldiers all loved her and gave her the endearing name of "Mammy".

One time, when the Confederate Army was coming through York, they marched toward any place where they saw flags flying from flag poles with the intention of capturing or destroying them. When "Mammy" heard that the Confederates were coming, she took down the flags, rolled them up, put them under her skirts, and ran about six squares to save the flags from the Confederate Army.