Interlude: Kingdom of Sicily, 1121
By usurping the Kingdom of Sicily, Oberto instantly pissed off every vassal (who loved him the day before), because he held 7 duchies.
I mean...eight.
With a relations penalty of -160 due to too many duchies and his demense too big, Oberto needed to start sharing the wealth.
First off, Bruno di Parma was made Duke of Calabria, and given all the client titles (except the bishoprics) to do with as he pleased. That brought the demense to 12/11, and left 5 duchies to parcel out.
Berto di Parma was given the Barony of Lodi to get under the demense limit. Next, Oberto gave his grandson Oberto the duchies of Mallorca, Valencia, Genoa, and Modena. This will help him in his quest to Become Exalted among Men (attain 1000 prestige, get 100 prestige, +10 relations bonus to feudal vassals, title "the Great").
This left Oberto with a manageable 3 duchies. The extra duchy is being held to parcel out to a worthy di Parma in time.
Here's a map of direct vassals from September 1121:
And here is a map of independent realms.
My council.
And a look at the technological state of the realm (crap):