John Burton owned my property at the time of the tithe map). I expect there were also some changes of ownership intended to benefit from enclosure acts. On top of that we have english documents recording transactions of welsh properties so the names tend to get mangled. You would think with names of houses, streams, fields, copses and dingles as well as some acreages, it would be possible to marry up transactions from 1740s to parts of the tithe map a 100 years later, but it is actually very difficult.
I did some work with the Cynefin project, and it was quite confusing when actual properties were not named, just house and garden etc.
One place near me has always been called Parsonage Farm, simply because of the farmers family name from the 1800s
When the building was demolished about 15 years ago a new house was built on the site, at first it kept the name, then it was sold and the new owners named it Holly House.
We still have roads named after the farmers who had their places nearby.
I'm interested in which is your property. I have a few books about Minera but none have information much earlier than the mid 1800s.
I know Lloftwen was connected with Adwy Chapel, and Dissenters held meetings there c 1784 according to information read somwhere.
I also did some research on Minera Hall ..