Find Ancestors

I am trying to trace ancestors of my father, family name Morgan. The family lived in Brecon, some members moving to Swansea to look for work but my grandfather moved to Crickhowell where he was a cabinet maker to a large estate and died in 1944. Some of my Grandfather's family lived in Brecon by a church on the road out to Llandovery until quite recently and his siblings were called Frederick, Mary, John and possibly Margaret. One ancestor was Frederick, connected with the design and/or refurbishment of the Barracks as an architect and also a member of the Council. He would be a brother or uncle to my grandfather. This would be late 1800's I think. One Frederick, possibly brother, married Gwyneth and moved to Canada for a few years. Their daughter is named Dorothy. One sibling had a daughter Olwen, cousin to my father. married to Herwood, son Peter, and lived in Burry Port. My grandfather married Elizabeth Howells whose mother was a midwife but I have no info on where she came from. Any information on Morgan's from my grandfather back, or even my grandmother would be great. I would love to know where they married, where my grandmother came from and details of my grandfather's ancestors. I believe there are school teachers in the history as well. Trish