Generally I do that, but on paper (mistake!), until I can find two or three sources that match, but in this case, I'm hitting 1870 and seeing wildly different family groups for this set of Halls, and none of the 1880 data seems to match correctly. There are Halls in Baltimore, Annapolis, DC and Calvert county, and all use Charlotte, Sam, David, Ann, over and over again. I've started to keep scratch boxes, like what you're doing on Ancestry, but I get an overwhelming number of hints that are wrong, so keeping track of it all is getting difficult. I guess a sep. tree for each is an idea, but I already have 4 trees.