Pushed by the rather apparent lack of weapons I looked into the file.
They are there, but they are rater hard to get... Especially the Sword in the Stone, it can't be gotten by anyone as it is set to be given out in turn -726, but then again only Romano-British can get it.

So in terms of weapons I was rather surprised by the lack of them.

Wha I did find was some very interesting ancilliaries. For isntance each ofthe patriarchies can grant a patriarch (I have only gotten the one of Constantinople myself), even the Pope.
Another one I really like is if the father has a bit of paranoia then his son might get an overprotective nanny when he comes of age.
You can even get a praetorian guardsman.

Oh, and both Nestor and Pelagius are possible to pick up.