I have spent years on researching my family tree.
Now somebody who may or may not be a distant relative to me has started adding to and changing my research. It's not somebody I've heard of before, but he wants me to delete errors he has made to his own tree, because he thinks I have administered it. He has in other words mixed his family research with mine.
How do I delete what he and his wife/partner have added?
I'm not interested in distant branches of my supposed family, but only to find out how far back I can take the direct lines.
In the hope I have prevented more interruption, I've blocked him and his wife/partner, but as far as I can see, they still influence my family research.