the_hdk - Sure, I would gladly use them.
Where can I find them?
theblacksheep, AllmyJames - Actually, crown goes to Władysław Herman first, since Bożydar died (suicide after a long time with 'depressed' trait), before concluding peace with Konrad. Thus, currently there son with claims to the throne, at war with his father - king.
Enewald - Well, Konrad already has three sons, so there will be more rivalling Piasts in the future.
Vesimir - Actually, when he defeated Władysław (taking his titles), Konrad was count of Płock (as Bożydar`s vassal). He then received Duchy of Masovia and revolted in 1098. I should probably write it more clearly.
hyme - According to DVIP instructions (Mappa Regnum was installed last)
Little Bonus - some screens from excellent tool 'Dynastic Glory', which combines lot of variables to show how good dynasties or individual characters did:
Top ten dynasties.
Top ten characters. Bożydar is quite high actually (a lot of accumulated prestige, I guess). Suprisingly, his cheating, executed wife is there too (she had high stats).
Detailed table with top 20 dynasties (Piasts at #13)
Data on Piast dynasty, with Bożydar being most succesful monarch so far. Władysław Heman is at the bottom with massive -1500 prestige - it would be quite a challange to play as him I think.