A question about using wool? bit OT

....in a quilt?

Ok i know this is not exactly yarn related but it does relate to wool...When i
lived in Italy i was loaned a non patchwork quilt that i was told was stuffed
with wool. Even though it was the thickness of a regular quilt (rather than a
duvet) it was very snuggly. I loved it and I have been toying with the
prospect of stuffing my patchwork quilt with wool as i know it would be warmer.

I know that you can get hold of wool batting but i know the maker of my quilt
must have used fleece- So how would i go about doing it with fleece? I imagine
i would have to use ticking to create a sort of cotton covered batting, and i
can see that to stop the wool migrating into a heap at the bottom edge i would
have to quilt it into compartments. But i cannot imagine how i would start,
and how to go about getting a nice and relatively flat end product. In my mind
i would use wool locks- something pretty felt resistant (so i could wash if
absolutely necessary) maybe Suffolk?

Your suggestions would be so appreciated.

Regards
Sarah
p.s. the mattress was also wool filled and (apparently) would be slit open
every 2 years in order to wash the wool...and the pillows- I can't even imagine
the amount of work not to mention drying the wool! Not planning on filling my
mattress lol