Think of Charlemegne's HRE, which effectively died with his death, or the breakup of the reconquista kingdoms, or the slow decline in power of the HRE.
Instances of titles just sort of losing recognition and becoming effectively titular is one of the things I feel crusader kings sorely lacks. Today we take a broader look at the entirety of 'Catholic Europe'
LADIES AND GENTLEMEN, I HUMBLY PRESENT TO YOU THE HOLY REFORMED FAITH OF NO RELIGION!.The game loads so fast, can't read the loading screens.I made a pixel art version of the CK2 logo :).