It's not a big anniversary, but it still bears mentioning. On 5 April 1614, John Rolfe married Pocahontas in Virginia Colony.
It's difficult to imagine what her life was like, what were the circumstances of her marriage beyond official records, or how she dealt with London. To me, the story has always sounded a bit non-consensual. But the world of 1614 was so alien from our own world, even in England and America, it's likely no one had even an analog to our modern notion of "consent."
Still, it's an interesting anniversary.