C.E. Evans wrote:
(I doubt the Galaxy-class ships we saw during the Dominion War had families aboard, but the Yamato and the Odyssey probably did, though--but the tragic fates of those vessels are more indicative of the inherent dangers of space in general, IMO).
I'm pretty sure the Odyssey did. There was a line about "offloading all nonessential personnel" to DS9 before going to the Gamma Quadrant, and that likely meant families.
And as the Yamato was during the Roddenberry era, I'm sure it had families as well.