I wish when I played the game I could modify the file to look like the original post.
I don't know you but sometimes "expanding" by marrying is looooong and tedious.
You marry, you accelerate time, have a son, accelerate time, wait for "you" to be death,
accelerate time if your son is not 16 years old, get married, acelerate time, wait for him to have a son,
accelerate time...
Yes, you can invite to court, and press claims, but sometimes it's kinda tricky when the claim
will actually be part of your dominion...
In the between, what do you guys do?, I played as Duke of Lombardia and was
awfully slow and kind of... "errr... now what?, oh yeah, a coffee").
The nightmare (and unfortunately, this edit is useless in that moment) is when
the HRE turns up the royal power or whatever is called so you can't fight wars.
=/