Rossmore, of Monaghan in the County of Monaghan (Barony)
A peerage of the United Kingdom.
Letters patent issued on Sat 7th Jul 1838
To Warner William Westenra as Hereditary peerage (already peer of Ireland).
|Number||Surname||Forenames||Held from||Held to|
|1st||Westenra||Warner William||Sat 7th Jul 1838||Wed 10th Aug 1842|
|6th||Westenra||William Warner||Fri 17th Oct 1958||Tue 4th May 2021|
|7th||Westenra||Benedict William||Tue 4th May 2021||-|