Hi John, Hi Vance,
I looked and I see indeed there is a list on CP which has numbers going back this far. Surprising, because this is a long time before parliamentary barons. They did not get called to parliament until centuries later.
However, this page of CP is actually giving a list of holders of the castle and the feudal barony connected to it. So this is not a list of peers which is what we normally use CP for? There are commonly a few extra generations before the peerages themselves start, but these are NOT peerages and I think it could get complicated if we use those too much for the reasons I already mentioned. (Feudal baronies can be split, merged, or have various types of uncertainty connected to them. CP was not aiming to create an authoritative list for these, and I don't think these extra generations are always intended to show any other type of succession than just parent to child succession.)
Context seems important. This relatively long list comes after a sort of special essay about the family, and specifically about the claims which Smyth made about these earlier generations. These claims were apparently influenced by a special legal dispute in early modern times.
It seems there are claims that the Berkeleys are a special case where they should be considered peers back into the 12th century, as if there was already a parliament. In their case, it was argued, their feudal territory should be considered to be the same as their MUCH later parliamentary peerage.
CP calls those claims WRONG, and I think there position is the standard modern one. We should therefore be careful of Smyth on this point.
Concerning succession boxes more generally, I have no strong opinion, but at the moment they are not extremely common. I know from Wikipedia that such boxes can become a problem if they are over-used. Some of the real aristocrats in England would have held quite a few such feudal baronies at once, and had many different successors and predecessors, and so if we keep going this way then things could get messy. We don't have the benefit of something like CP to help us work out each case, and the cases are sometimes much more complicated and more difficult to track.
OTOH I would love us to find some kind of way of at least sometimes tracking feudal holdings through the generations, which could be a great service to genealogy. While BIG infoboxes like these at the tops of articles could make our articles unreadable, I do wonder sometimes about trying to invent a more compact style of info-table for the bottom of the page, or even on a special project page, in order to show the descents of knights' fees and the like. With the Sanders baronies I have just used Categories for now. Maybe that's the best we should hope for. Potentially that type of system can be used for manors as well, and project pages could be used to show the descents.
To be clear, there is no urgent problem with this case, or more generally for adding the extra generations which CP sometimes gives before a peerage begins, at least in simple cases. Still, it seems worth asking where we will draw the line, and how we will handle such cases when there is a problem.