The Newburghs of Dorset could trace their ancestors back to the Conquest, and were descendants of the first earl of Warwick, albeit belonging to junior line which continued after the failure of the senior branch in 1242. Originally seated at Poorstock, they acquired the manor of Winfrith Newburgh to the north of Lulworth Cove by grant of Henry I, thereafter holding it of the Crown by the serjeanty of offering water in a silver basin for the King to wash his hands on Christmas Day. The manor was often leased out for a lucrative rent. The Newburghs’ estate at East Lulworth, purchased at the end of the thirteenth century, became the principal seat of the family in our period, in particular during the lifetime of our MP’s son, John.
A constant ambition of Newburgh and his son John was to make good their claim to the estates of his maternal grandfather Nicholas, the last Lord Poyntz, a matter on which they focused their attention for a century or more after the death of that lord in 1376. The inheritance of John’s mother and her sister Avice had met with challenge, and although their legal actions for possession of the Dorset manors of Stockwood and Broadway eventually proved successful, their suits for that of Tockington in Gloucestershire ended in failure. By 1396 Avice had married (as her second husband) another member of the Newburgh family, John’s kinsman Gilbert,
Despite his standing as a tenant-in-chief and the obligations for him to serve in a military capacity, no evidence has been found that Newburgh took part in warfare overseas. He refused to take up knighthood on at least two occasions. Of his interest in the parliamentary representation of his home county there can be no doubt: he frequently attested elections conducted at the shire court at Dorchester from 1414 onwards, doing so at least nine times. Curiously, appointment to royal commissions was delayed until he was in his forties, although his nomination as a commissioner of array in 1416 was followed by the inclusion of his name on the list of Dorset men sent to the Council early in 1420, as being suitable for military service in defence of the realm.
Besides going to the Exchequer to account for the issues of the shrievalty, Newburgh appeared there on another occasion, on 8 May 1423, to provide sureties for the Dorset lawyer Robert Rempston*, who was one of his feoffees and neighbours.
Not surprisingly, in 1434 both Newburgh and his son John were listed among the gentry of Dorset required to take the oath against maintenance, with Newburgh senior appearing second on the list after the wealthy Sir Humphrey Stafford* (Sir Richard’s father). Despite this, a year later one of them stood accused of serious disturbances in breach of the peace. It was alleged in April 1435 that a John Newburgh and his men had seized a ship called Sawostane de Garant, which they claimed had sailed into Weymouth harbour in a warlike manner, and carried away its cargo of linen and salt. On receipt of a petition from the owner of the vessel, a Breton merchant, a commission was set up to inquire into the facts and recover the ship.
Twenty years before his death Newburgh had made settlements of some of his estates in Somerset and Dorset, and further enfeoffments of the same, made in 1434, had been to secure the inheritance of his son,
