Several years ago, my DH and I were on a bus tour of Yosemite. The guide was asking everybody where they were from and one couple said they were from Michigan (I grew up there but had lived in another state for probably 15 years). At the next stop I told them I was originally from Michigan and asked what part they lived in. Turns out they were from the next town over from where I grew up. I told them my maiden name and, sure enough, they knew my dad, my uncles, my cousins...