As the game has been updated, surprisingly, some non-gameplay impacting history bugs have been fixed since (HIP)/(the mods it is based off of)/(maybe just SWMH) began development.
For example, the starting dynasty of Sweden (I think Af Munso in 1066) still has floating characters in the dynasty tree, even though the base game has fixed that. So I guess a lot of SWMH history hasn't incorporated the fixes that were in the base game in other places as well, or maybe in this case they cared more about not creating placeholder fathers than having a functioning dynasty tree?
The ck2 mod validator lets you see all dynasties which have unconnected characters, but most of them seem to be from startdates after 1067, since less work/reports have come in from those startdates. If there was a way to remove all characters born after 1067 then it'd be a lot easier to see what dynasties/characters still have errors with the validator and fix them.
For example, the starting dynasty of Sweden (I think Af Munso in 1066) still has floating characters in the dynasty tree, even though the base game has fixed that. So I guess a lot of SWMH history hasn't incorporated the fixes that were in the base game in other places as well, or maybe in this case they cared more about not creating placeholder fathers than having a functioning dynasty tree?
The ck2 mod validator lets you see all dynasties which have unconnected characters, but most of them seem to be from startdates after 1067, since less work/reports have come in from those startdates. If there was a way to remove all characters born after 1067 then it'd be a lot easier to see what dynasties/characters still have errors with the validator and fix them.