It's really hard to see an opera after it starts, and not know which one it is. I tuned inthe middle of something, there was a britone in 18th century dress singing an aria I thought I recognized but couldn't place, he turned out (of course) to be the villain, the soprano was a bit pregnant, the tenor was grubby and for a while he and the men of the chorus held the baritone at sword's point (and a rather large pistol pointed directly behind his ear).
I thought the soprano was "Leonora". They were definitely singing in Italian.
What did I see?