Rideau, of Ottawa and of Castle Derg in the County of Tyrone (Barony)
A peerage of the United Kingdom.
Letters patent issued on Tue 11th Mar 1952
To Harold Rupert Leofric George Alexander as Promotion.
|Number||Surname||Forenames||Held from||Held to|
|1st||Alexander||Harold Rupert Leofric George||Tue 11th Mar 1952||Mon 16th Jun 1969|
|2nd||Alexander||Shane William Desmond||Mon 16th Jun 1969||-|