Not being able to get good solid sleep sucks period. 15 minute power naps seem to be the order of the day sometimes.
It is good you have some memories of your grandpa and grandma. It sounds likehe was a very special influence. I think it would have been so cool to have known mine.
Getting old ain't for sissies.
They don't use sleep deprivation as an interrogation technique for no reason...it can break a person down quite quickly. I wish I could get better sleep but a power nap now and then helps... difficult to do when working though.
I wish you peace and restful sleep soon.