Before retiring, John B. Hilling was an architect and town planner. Born in Abertysswg, in the Rhymney valley, he now lives in Cardiff and is the author of nine books and numerous ...ver maisBefore retiring, John B. Hilling was an architect and town planner. Born in Abertysswg, in the Rhymney valley, he now lives in Cardiff and is the author of nine books and numerous articles, mostly on historic architecture in Wales.ver menos