Name The Year: (USA) The opera "The Pirates of Penzance" is produced (NYC).?

Questions

What name is given to a marriage in which the wife does not acquire her husband's rank and the offspring do not inherit the title?

The Albert Canal links Liege with which city?

In which Gilbert and Sullivan opera did Col. Fairfax marry Elsie?

In which Irish county is the Blarney Stone?

On which river does Amsterdam stand?