There was a romance novel that I read part of in around 1992, and now
I’d like to read the rest of it.

The story was about a professional bare-knuckle boxer who fought to
raise money for his daughter. His wife had left him or perhaps died;
the idea that he was raising his five year-old on his own.

I don’t know the publisher, but I know it was one of those
assembly-line romance novels, so it was published by Mills and Boon,
or a similar type of publisher.

What is the title of this book?

For starters there is a message board on this website where you can
post your plot description and other users try to help you find the
title:

http://www.romance-novels.com/