If you have an older house then the deeds can give you a great insight as to who has owned your property. It may be that your solicitor still has the deeds and you could examine them. Worth a check when you can.
Property Sales Records
18 lots including Pandy, Brynspeard, The Drain, Llanavon Cottage & The Maerdy.
List of properties presumably, sold by Powell family in 1940. Possibly to Lord Brocket of Kinnersley Castle. Lord Brocket looks to be a interesting character, if we can believe Wikipedia. As he appears to have connections with Nazi Germany and attended Hitler’s 50th birthday party!!! From National Library of Wales