>>What happens when a child of the Mock-Harringtons marries a child of the Something-Nosonovskys? The poor child will have chronic writer's cramp before grade 2!
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>My older son went to kindergarten with Emma Fried-Cassorla and Gabriel Felber-Glick. I often wondered what would happen if the two married.
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>In my community, hyphenating the last names for the kids is fairly common, though the parents involved have made a variety of different choices for themselves (both hyphenated, wife hyphenated, both using original names). I'll be curious to see how this plays out as these kids make their adult choices.

We've done that without our daughter. My wife and I have a family names, but daught is Plant-Delay.