Wikipedia
Cilybebyll is a village and community in Neath Port Talbot County Borough in Wales. It includes the villages of Alltwen, Fforest Gôch, Gellinudd and Rhos, and is located east of Pontardawe, north of Neath and north east of Swansea. The community has a population of 4,806.
The Cilybebyll estate was established in the 15th century, and after development by various families, by 1838 was recorded as having the largest land holding in the district. The main house, Plas Cilybebyll, was redeveloped in 1840 by Henry Leach, creating a south-facing Victorian facade on the property. His son Frances Edward Leach inherited the estate in 1848, changing his name to Lloyd in 1849 by Royal Charter in order not to forfeit his inheritance. The family remained in residence until the early 20th century, when the family records were passed to Swansea Museum. The main house today is a guest house.