We were both nineteen and a half - married in February 1964, first child in September 1965, second in August 1968. Of the eight girls in my year at secondary modern school - four married before I did, one married later that year , one didn't marry until she was in her late 30's. Two have died (one in an accident in her late 20's, after she'd divorced), one died ten years ago (still married to original husband), three of us still married to our 'original' husband.
Daughter married at 21, was 36 when she had her first son and 42 when she had her second son. Son married at age 42.