THELWALL, a chapelry in the parish of RUNCORN, hundred of BUCKLOW, county palatine of CHESTER, 3 miles (E. S. E.) from Warrington, containing 327 inhabitants. The living is a perpetual curacy, in the archdeaconry and diocese of Chester, endowed with £400 private benefaction, £ 1000 royal bounty, and £300 parliamentary grant, and in the patronage of T. A. Pickering, Esq. The chapel has lately received an addition of two hundred and forty sittings, of which one hundred and twenty are free, the Incorporated Society for the enlargement of churches and chapels having granted £120 towards defraying the expense. The Duke of Bridgewater's canal passes through the parish, and the river Mersey forms its northern boundary, on the south bank of which river are some gunpowder mills. Thelwall was formerly a considerable town, though now but an obscure village.