ealdordom
/eɪˈaldədəm/ /ˈaldədəm/(also aldordom) historical in later use
noun
1Lordship, chief authority; = aldership. Now rare.
2The position, rank, or office of an ealdorman.
Origin
Old English; earliest use found in King Alfred (c848–899), king of the West Saxons and of the Anglo-Saxons. From alder + -dom.