I added the wrong father for my Grandmother, Fathers side.
Here are the instructions for removing your father from your husband's family. Navigate to your husband's Person Page and then:
Here is the link to this information in the Help Center. You can print it out to keep it handy as a reference.
I made a mistake and added my father as my husband’s father on my family tree. I can’t figure out how to delete it.Help!
^^What VickiFought and bathompson said.