I'm going to make your headache worse: Charlie was played by Robert Walker Junior, and he and his brother both look astonishingly like their father, Robert Walker Senior.
That reminds me of seeing Strangers on a Train and marveling at the resemblance.
Likewise, I once saw Alan Hale, Sr. in an old movie, and didn't know for sure if it was father or son (of Gilligan's Island).
I used to think Nina Wayne and Carol Wayne were the same person, from their separate guest shots on Bewitched.
And I always used to think it was Jerry Mathers (the Beaver) on that first-season episode of Bewitched. It was his brother Jimmy. Totally fooled me.
Last edited: