It was in the reign of Edmund, circa 940, that Ealhhelm was appointed as an ealdorman. He shared authority in Mercia with others, including Æthelstan Rota, Æthelmund, and another Æthelstan. The division is presumed to have been on a geographical basis. Ealhhelm and his family appear to have been connected with south-western Mercia, the former kingdom of the Hwicce, which corresponded approximately with the boundaries of the diocese of Worcester. Ealhhelm may have held the lands formerly belonging to Evesham Abbey as these are said to have been seized by one Alchelmus in the time of King Edmund. A kinsman of Ealhhelm named Wulfric—probably the father of Ealhhelm's daughter-in-law—who later received part of the Evesham lands, may be identified with the brother of Saint Dunstan.
Ealhhelm is described by the historian Shashi Jayakumar as "an obscure figure who had been ealdorman in Mercia under Edmund". His sons were Ælfhere, Ealdorman of Mercia, Ælfheah, Ælfwine and Eadric. Ælfric Cild may have been his son-in-law.
- Jayakumar, p. 85
- Ealhhelm 13 at Prosopography of Anglo-Saxon England. Retrieved 2007-10-28
- Henson, Donald, A Guide to Late Anglo-Saxon England: From Ælfred to Eadgar II. Hockwold-cum-Wilton: Anglo-Saxon Books, 1998. ISBN 1-898281-21-1
- Williams, Ann, "Princeps Merciorum Gentis: The Family, Career and Connections of Ælfhere, Ealdorman of Mercia" in Peter Clemoes (ed.), Anglo-Saxon England, 10 (1982), pp. 143–172. Cambridge University Press, 2007. ISBN 978-0-521-03836-2