Jersey City, NJ
My parents were married in 1968; Dad was getting in grad school for mathematics, Mom was meandering through undergrad. They were total hippies, and eloped without notice to my grandparents, then backpacked through Europe, Canada, America. They lived in Hawaii, Colorado, Maryland. My brother was born in 1980, I came in 1983, and that's when it fell apart. She grew tired of asking him to grow up, he grew tired of being asked. They never legally divorced and stayed civil.