Thomas was a kinsman of James Walbrond of Wareham, parliamentary burgess in 1362 and his fellow Member in the Lower House in 1377 and 1378. James was the earl of March’s bailiff of the manor of ‘Rowborough’ in 1369-70, mayor of Wareham in 1373-4, and a lessee of property in the town in 1392-3.
It was probably this Thomas Walbrond who in the 1380s was a feoffee of the reversion of the manor of Wymering near Portsmouth, which belonged to Geoffrey Roucle, for in 1387 he sued the eventual beneficiary of the trust, Richard Wayte, for debts amounting to £40 incurred in Dorset. Walbrond was appointed as searcher of ships along the Dorset coast from East Lulworth to Wareham in 1387, and was probably still occupying the office when twice reelected to Parliament in 1388. Nothing more is heard of him for certain.