∆thelweard (d. 920 or 922) was the youngest son of King Alfred the Great and Ealhswith.
He was born about 880. That he was Alfred's youngest son by Ealhswith is stated by Asser in his biography of the king (c. 893). Asser also provides valuable detail on the boy's upbringing. Whereas his brother Edward and sister ∆lfthryth were raised and educated at court, ∆lfweard was sent to a type of school (schola), where he learned to read and write both Latin and Old English and was instructed in the liberal arts "under the attentive care of teachers, in company with all the nobly born children of virtually the entire area, and a good many of lesser birth as well." Such education would have started at an early age, before the onset of adolescence.
Through Alfred's patronage, ∆thelweard became a wealthy landowner. In his father's will (AD 873 x 888), in which he is unnamed but called Alfred's "younger son" (Ģam gingran minan suna ), he is the beneficiary of a vast number of estates across the south of Britain: Arreton (Isle of Wight), Dean (i.e. East Dean or West Dean, West Sussex), Meon (i.e. East Meon or West Meon, Hampshire), Amesbury (Wiltshire), Dean (probably West Dean, Wiltshire), Sturminster Marshall (Dorset), Yeovil (Somerset), Crewkerne (Somerset), Whitchurch Canonicorum (Dorset), Axmouth (Devon), Branscombe (Devon), Cullompton (Devon), Tiverton (Devon), Mylenburnan (probably Silverton, Devon), Exminster (Devon), Suūeswyrūe (possibly Lustleigh, Devon), Lifton (Devon) and appurtenant lands, i.e. all his father's property in Cornwall, except Triggshire.
Since the (late) 890s, ∆thelweard attested several of his brother's charters. According to John of Worcester, he died on 16 October 922 and his body received burial at Winchester, where he was soon joined by his brother Edward (d. 924). William of Malmesbury confirms the place of burial, but places his death four years before Edward's. It may have been ∆thelweard whose name was entered into the New Minster Liber Vitae, fol. 9v., with the designation clito "śtheling", but if so, he seems to be mistaken for a son of Edward.
William tells that ∆thelweard had two sons, ∆thelwine and ∆lfwine, who died fighting in the Battle of Brunanburh and who were buried at Malmesbury, at the behest of their cousin King Athelstan, who was buried there himself only two years later. The connection with this house is prominent in a series of three spurious charters from the Malmesbury archive, in which Athelstan is made to endow the abbey in memory of his "cousins" (patruelia) ∆thelweard, ∆lfwine and ∆thelwine. If ∆lfwine and ∆thelwine died childless, their deaths would have brought an end to ∆thelweard's direct descent.