The surname Alleman seems to have been derived from the Alemannic tribe renowned for its valor and bravery. The Germans used to refer to this tribe as an all men tribe since even the members of fairer sex belonging to this tribe exhibited physical strength and toughness commensurate to that of their male counterparts. The tribe was involved in intense battles with the Franks for territorial control over Rhineland. This all man legend gave rise to several variations of the surname including Allemong, Allman, Alleman, Allemang, Allaman and Allamen among several others.
The name Alleman was also used to describe someone hailing from Rhineland. The family rose to fame and riches in the middle ages with the office of first and second mayor of Madgeburg being occupied by Heyne Alemann several times. The other members hailing from the Alleman family occupied different positions vital in running the administration of government. Numerous people carrying the surname Alleman migrated to Pennslyvania and New York in the 18th Century. The settlers included Simon Alleman, Jacob Alleman Junior, Stephen Alleman and Hiram Alleman among others.