English Benedictine Reform acceptance of Benedictinism, and that the movement's greatest benefactor, King Edgar, had played a major role in the unification by his demands for adherence to the Benedictine Rule. Æthelwold probably tutored Edgar as a boy, and was very close to him; it is likely that Æthelwold was influential in persuading the king to carry through his reforms and support Benedictine monasticism. Monks became dominant on the bishops' bench during his reign. Æthelwold was close to Queen Ælfthryth and supported the claim of her son Æthelred (978–1016) to be king against his elder half-brother, Edward (975–978). Dunstan supported Edward, who succeeded
Handyside Edgar by their father), and the Osborne Estate (created around 100 years earlier by a Dr Osborne). He appears to have already had kinsfolk in Jamaica including several half-brothers and sisters fathered by Alexander Edgar with negro slaves. Handyside Edgar acted as a physician in both Trelawney and Montego Bay in Jamaica. He was elected a Fellow of the Royal Society of Edinburgh in 1786. His proposers were John Robison, John Playfair, and Andrew Dalzell. He died in Jamaica on 8 June 1806. He is buried there in St James Churchyard. A dispute over his will, between his brother Alexander Edgar