You never know when you'll run in to a relative. A few stories.
My husband attended a conference recently. One of the last presentations he went to, somebody struck up a conversation with him about his surname. The other gentleman had the same surname in his ancestry. Maybe they were related. Semi-common surname, multiple branches unrelated to each other around here. Chances were small. But, it turned out to be true.
One of my brothers met a girl on a blind date. No big deal. Second date, somehow the name of her great grandma came up in conversation. My brother's reaction: "I think we're related." The name? Kezia. And we are.
My sister-in-law ended up marrying her husband because during a class somebody brought up Stephen Markham. She piped up that he was an ancestor. Future spouse said "Mine, too." They began to chat afterwards, and ended up dating and marrying.