My paternal grandmother got married at the age of 16 because she was pregnant. Her new husband was 19 and, as it turned out, a womanizer. He died young, leaving his young widow with 2 young kids, and she never married again.
Later in life she became quite a bitter tyrant, probably feeling deceived by life. My mom, my brothers and me were scared by her because she could get horrible tempers. A shame - because in fact she had lots of wonderful capabilities like painting, sewing and cooking.