Some years ago I read a time-travel series that I'd like to find again, but I can't recall the name of it. I've searched repeatedly and found nothing.

Here's what I recall:

• It was about some kind of time-travel-related authority figures: Time Patrol, Time Police, Temporal...Something? I don't remember the name. (I've looked up similar terms and found nothing so far.)
• The protagonist wasn't one of these authority figures. He was in opposition to them, and he was the good guy, whereas the time police/patrol/authority/whatever were the bad guys.
• The protagonist fell in love with the (adult) daughter of the main Time Patrol/Police/Whatever figure.
• At some point later in the series, around the third or fourth book, I think, the protagonist and said daughter were escaping together. In the course of events, the protagonist got the daughter pregnant. Later, the main Time (Whatever) authority figure managed to get his daughter back. I remember the specific point that he had the fetus removed from her and placed into an artificial womb.
• Based on when I read this series, I think it would have to have been written no later than 1993, but it could have been much earlier, of course.

Any ideas?