OOOOOOPSADOODLE!!!
That’s what I get for letting my eyes and brain
Read faster than they should!
Since the word refers to a WIDOW
The sire of the horse is VIOLENCE
Could it refer to the way that the husband died?
{Personally I’ve never understood the reasoning
Behind some of the Horse names I see..}
Why would anyone want to call a horse ... VIOLENCE

Or the reference could be as you said
Referring to the CHAMPAGNE....
Either way it still doesn’t make sense to me