There's a hack to remember which cousin is which. First, second, and third cousins (and so on unto infinity cousins) are an equal number of generations removed from the common ancestor.

FINALLY, A Teacher Explained What "First Cousin Once Removed" Means, And I Know I'm Not The Only One Who Wrongly Assumed It Was About Divorce. BuzzFeed. Wed, February 9, 2022 at 5:10 AM UTC.

My first cousin's son would be my first cousin, once removed. Removed means down by one generation," Silberman explains in the clip. "If my first cousin once removed has a son, he would be my ...