What is the three-word theme for the puzzle with the four answers shown below, and what would be a good title for the puzzle?

FREE IN THE FAMILY
FREE HANDS ON DECK
FREE'S FAIR IN LOVE AND WAR
FREE'S WELL THAT ENDS WELL

Answer:

The theme is FREE FOR ALL, and a good title for the puzzle would be (and is) HAVING A BRAWL (free-for-all).

Credit: John M. Samson
HAVING A BRAWL