I honestly don't know. My grandma sewed a lot. She used to make us stuffed animals, but I never remember her making a quilt. I remember the first quilt that I made I was in high school - it was not good ha ha Then when I was in my early twenties I made my first twin size by hand... then it was years before I did another one
I think I must have just seen quilts around and on TV and just really liked them