Derrick Warner William Westenra, 5th Baron Rossmore, known as The Hon. Derrick Westenra until March 1874, was an Anglo-Irish noble, soldier, author and Orangeman.
- Occupation
- politician
- Position held
- member of the House of Lords
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- February 7, 1853
- Died
- January 31, 1921
