Remove person and start again
Someone has added a lot of strange information to my great grandfather in the family tree. He was born in Ireland and lived much of his life in England. Whoever added information has said he emigrated to the United States and had a long list of children I've never heard of. They even had him living in the States in 1910 when he died in England in 1906. It's upsetting me quite a bit. My grandad isn't even mentioned. Can I delete the person and start again with all the correct information and the citations to prove it?
This sounds like the result of a classic case of newbie-itis, wherein "same name, must be same person" leads to all sorts of time travel and other impossibilities.
No, you can't delete the American, but you can detach him from your English family. You'll want to start with a full exploration of your great-grandfather's Change Log, where you can restore any merged-away profiles and overwritten conclusions.
There are several articles in the Help Center explaining how to fix relationships in the Tree:
Here are a few articles from the Help Center that might help.
How do I see what changes were made about a person in Family Tree?
How do I undo a merge in Family Tree?0
Thank you for your help. I think I've managed to fix it with explanations. I have copies of things like the marriage certificates and links to census information so that people can check if they want to.0