My great-grandad was on the Jarrow March, and prior to that had been shipped off to WW1 in chains, due to being drunk and disorderly. Whilst there he saved several wounded men by going back into No Man's Land for them - one of their sons later tracked down his family (he was long gone by then) to say thank you, as had he not done so he would not exist!
In spite of - or perhaps because of it, he suffered terribly from shellshock, or PTSD as we now know it - he was not a very kind or gentle husband or father. My grandma was the only one of 5 children to stand up to him. She once laced his rum with salt to try and stop him drinking, and would put herself between him and her mother when he went for her.
My grandma was a natural redhead, and when my grandad asked for permission to marry her, he was told "you're a braver man than I am, if you're going to marry the ginger-haired bugger."
Grandad had taken one look at my Grandma, in church one Sunday, and decided to marry her - if only, he claimed, so he could see what the beautiful red hair looked like when not covered with a scarf. As part of his courtship, he took himself off to ballroom dancing lessons, so he'd be able to ask her to dance. He was a six foot bricklayer with a boxer's build (he was also an illegal prize fighter), but for the next 50 years or so they moved together with incredible grace on the dancefloor.