Measles DID kill many people prior to vaccination being available. The most common deaths were for young children though so yeah it probably didn't kill many grandparents as they never had a chance to live long enough to become grandparents.
As I have said many times, having children is hereditary; because chances are if your parents did NOT have any neither will you. But, in the case of measles remember it also tends to cause men to be sterile if caught at the wrong age. Tim S.