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			Two theories explain the etymology of the word Piast. The first gives the root as piasta ("hub" in Polish), a reference to his profession. The second relates Piast to piastun ("custodian" or "keeper"). This could hint at Piast's initial position as a majordomo, or a "steward of the house", in the court of another ruler, and the subsequent takeover of power by Piast. This would parallel the development of the early medieval Frankish dynasties, when the Mayors of the Palace of the Merovingian kings gradually usurped political control.