It was, I guess you'd locate the Picasso period as late thirties. (aaa.si.edu)
Yes, they were in there late thirties and forties so yes they wrote it when they were in their hundreds, but i gave the special memory powers. (religion.blogs.cnn.com)
Now, in my very late thirties, I have to admit that my father became my very good friend and my relationship to my mum turned somewhat sour. (attachmentparenting.org)