Æthelhelm of Wessex was born circa 865 in Wessex to Æthelred of Wessex (c847-871) and Wulfthryth of Wessex (c840-) and died circa 890 of unspecified causes.
Siblings
| Name | Birth | Death | Joined with |
| Æthelhelm (865-c890) | 865 Wessex | 890 | |
| Æthelwold (c868-902) | 868 Wessex | 13 December 902 Holme, Cambridgeshire, England | |