Argoed, with Ystrad, a hamlet, in the parish of Trêgaron, upper division of the hundred of Penarth, county of Cardigan, South Wales; containing 101 inhabitants. The name of this place signifies a sheltered and sequestered position among woods, which, with Ystrad, a dale, is descriptive of the situation of these two hamlets in the vale of the Teivy. The market-town of Trêgaron occupies the banks of the Berwyn, near its junction with the river Teivy.
Source: A Topographical Dictionary of Wales by Samuel Lewis Third Edition Published London; by S. Lewis and Co., 13, Finsbury Place, South. M. DCCC. XLV.