| # | Monarch | Portrait | Dates of Rule | House |
|---|---|---|---|---|
| 1 | Ioaquim | 
|
(1916-1920) | Hohenzollern |
| 2 | Searlas | 
|
(1920-1975) | Hohenzollern |
| 3 | Proinsias I | 
|
(1975-1976) | Hohenzollern |
| 4 | Proinsias II | 
|
(1976-present) | Hohenzollern |
| # | Monarch | Portrait | Dates of Rule | House |
|---|---|---|---|---|
| - | Criostiona | 
|
Heir Apparent | Hohenzollern |