- the wife or widow of a viscount (sense )
- a peeress with a rank equivalent to that of a viscount (sense )
- (born Nancy Witcher Langhorne) 1879-1964; 1st woman member of the Brit. House of Commons (1919-45): born in the U.S.
- 1763-1848; U.S. fur merchant & financier, born in Germany
- The wife or widow of a viscount.
- A noblewoman holding the rank of viscount in her own right.
- Used as a title for such a noblewoman.