Hi Megan and John,
Great to be in touch with you.
With regards to Zecariah, you probably have the info already, but through Census addresses I was able to get old map and modern satellite images of the houses the family lived in at Ffrwd-y-brithyll and Ty'n-y-ceunant. Also, paper cuttings of an auction in 1875 where auctioneer Lewis Williams sold both houses to a Mr. Harries of Halesowen. They came up for auction again in 1900, but it seems there were no buyers on that occasion.
Owen (in Okinawa, Japan!)