Cylchgronau Cymru

points to bru- (womb, breast, source) + nant. Another possibility is bru- < breu- (brau = brittle, frail, rotten). n. BRWYNEN: SJ 0322 Barrog R. Nearby are Brwynen and Cefn Brwynen. OS 1836 has Brwynen. Brwynen is singular of brwyn = rushes. An attribution to a single rush is improbable; a stream called after this plant would probably be nant y Brwyn. In S.E.'s Dictionary brwynen afon = "a stream of a river." BRWYN: A hab. of this name stands near the confluence of two streams which within a short distance Banw R. at SJ 137086. It is suggested that the hab. obtained its name from a stream whose name has been lost, cf. Cogan. I have no documentation in support. n. BRYN ADDA: SH 9918 n. Maes y Carneddau R. Named after hab. of same name. = of Adam's Hill n. BRYN COCH: SJ 074004 R. stream once known as Rhyddwr (v.) and perhaps Edyr (v.). Named after hill or hab. (= red hill). Mentioned in account of boundaries of Tregynon (Mont. Coll. XXX, 8) n. BRYN CHWILOD: SH 9713 Twrch R. After hill or hab. of the same name = of the hill of beetles n. BRYN DU: SN 9584 Severn R. Mentioned by Horsfall- Turner, (27): v. n. Cwm Du = of the black hill. n. Y BRYNIAU: SH 9715 Twrch R. The uplands where it has its source are called y Bryniau. (= the hills) v. Lluast. n. BRYN MAWR: SJ 0712 n. Dolwar R. = of the large hill n. BRYN Y GWYLLIAID: v. n. y Gwylliaid. BULL DINGLE Brook: Shown on Mont. XXIII 7.. P. H. Welshpool (Mont. Coll. VII 295) states "The Bull Dingle Brook rises between the Blue Bell (SJ 228081) and the Farm, and flows by Bryntirion and the limekilns and from thence into the Severn." BURGEDIN: SJ 2315 Sarnau Brook R. Shown on Enc. M. Township of Rhandergynwen, 1798. burgedin was the name of a township. n. BWA DRAIN: SH 9912 Twrch R. There is hab. of this name on OS 1836. = of the arch/bow of thorns. n. y BWLCH: SH 9412 Banw R. = of the gap/pass n. BWLCH Y FAN: Shown on Enc. M. Manledd Township 1826 on boundary with Trefeglwys. Bwlch y Fan is located NE of Fan Hill (SN 9489). This stream is the same as the upper stretch of Afon Cerist. = of the gap of the Fan (peak) n. BWLCH Y GROESLWYD: Mentioned in P.H. Hirnant (Mont. Coll. XIII, 47) as the name by which Barrog was known "on Mountain." Location would be SJ 0322. = of the pass of the grey cross. n y BWT: Joins Nant Cadnant (v.) in centre of Llanfair Caereinion near where the Boot Inn once stood. BYRNANT/BERNANT SN 9588 Gwden R. The form is uncertain. On SN 9489 the reading is Cwmbernant. P.H. Llanidloes (Mont. Coll. IV, 414) speaks of Byrnant on the Llanidloes- Trefeglwys boundary. County Sheet XLI, 8 has Cwm 'bernant, treating ber as < aber. Enc. M. Manledd Township (1828) has Nant Cwmabernant on course of Gwden. As the stream is a short