This might be called the mystery jug. We do not know the maker or subject and can only speculate as to what is going on or how the characters reached this dramatic impasse.

British potters frequently turned to the theatre or popular fiction for subjects that would capture the consumer's fancy. The histrionic nature of  the action depicted here suggests some now forgotten melodrama as the source. In one scene, two men, pistols drawn, are locked in mortal combat.  On the reverse, a woman, babe in arms, appears to reject the intentions of the victor who, on bended knee with hand on heart, makes an impassioned plea. We note, however, that in theatrical fashion, he faces an unseen audience rather than the object of his advances.

Perhaps the bundle of what seem to be military arms that ornaments the spout could offer a clue to the story. Or then again, perhaps not.

Kathy Hughes, A Collector's Guide to Nineteenth Century Molded Jugs, Volume II, is the source of the "Melodrama" moniker of this otherwise unlisted jug.  

Kathy illustrates two jugs with different scenes, but obviously by the same potter and featuring the same cast of characters. She speculates that the jugs may be representatives of a series depicting scenes from the same narrative.