Then there are the six white horses that Anna Feyer offers to the judge along with gold and silver to ransom her brother Laszlo.

"Anna Feyer, Anna Feyer
I don't want your six white horses
I don't want your gold and silver
All I want is your sweet favours"

Why six? That song goes on to use thirteen:

"Cursed be the judge so cruel
Thirteen years may he lie bleeding
Thirteen doctors shall not cure him
Thirteen shelves of drugs not heal him"

Scope for a thread on the numerology of folksong?

Alan