When loading the save game, there is a list of columns with tiers (king, prince, count) - check which province the Duke of Moray is in using that? In a pinch you could even load up as the Duke of Moray in case finding the province in context is a pain. Assuming it's the primary title. Otherwise, you might have to resort to save-game files?
Yea, this'll only work on a primary title. Now consider my WC game (started as Duchy of Aquitaine, WC by 1160), where I was repeatedly suffering from low fertility and eventually decided to start handing out kingships when the ruler I had achieved WC with was over 60 and refused to die (the initial plan was to roleplay him being stubborn to the death, then let his oldest, depressed bastard son redistribute some lands and then commit suicide, thus leading to the second-oldest bastard son (no legitimate children at all) to inherit (elective law), who would then redistribute neatly, and so forth (he had damn good stats so could've kept playing as a smaller empire)).
What I instead did was decide that the conqueror of Europe went senile and just started handing out "kingdoms" to whoever. This was the result:
That's the senile guy on the verge of losing everything (as he's at war over his remaining titles, not so much lands, with half of Europe).
My plan is to at some point continue as the third bastard son (underage Count of Palermo), just to make things not too easy, but the big problem is the same as with the OP, since because titles don't necessarily coincide with geographical location at all anymore, I'll probably have to resort to saved game searching to find out who it is I need to usurp titles from, for instance.
Not like it's going to be easy anyway, with level 3-5 forts in the richer provinces.