Name of Place: Garthbeibio; County: Montgomery; Number of Miles from: Llanfair – 7; Dinas Y. M. – 10; Llanfyllin – 10; Dist. Lond. -190; Population: 342.
Garthbeibio. This little village, which lies between the rivers Twrch and Banwy, has its church dedicated to Tydecho, a saint who lived at the close of the fifth and commencement of the sixth century. Adjoining the church is a well, constructed so as to form a cold bath, the water of which is said to be serviceable in rheumatic complaints. Near this village, whilst the bridge was being erected for carrying a new road, a large kist-vaen, or stone chest was found, containing two skeletons, and an urn, with ashes and burnt bones: it was supposed to have been of British origin.
Source: England and Wales Delineated by Thomas Dugdale assisted by William Burnett; published by Tallis & Co., Green Arbour Court, Old Bailey, 1835.