Like many people, most of what I originally knew about my ancestors was limited to just a few generations. But now I have been able to go pretty far back, and coincidentally the oldest ancestor I know of so far is the one of the same last name. I don't know much about him but he (and another ancestor) was apparently from Ireland in the 18th century. I learned long ago that my surname originated in Scotland and Ireland but this is the first time I knew for sure.
Since he was the ancestor to many people, someone studying his history believed his wife was Native American. His spouse wasn't named so that makes a bit of sense. While my mom had told me that is was likely we had some Native American ancestry on my maternal side (though I'm not sure), this is the first time I heard of the possibility on my paternal side. I've seen a few ancestry/history places offer a genetics test where it can tell you what regions of the world your ancestors were from. Now that I know this, I'm tempted to know for sure, as genes don't lie.