| # | Monarch | Portrait | Dates of Rule | House |
|---|---|---|---|---|
| 1 | Andrus Priidu | 
|
(1918-1969) | Mecklenburg-Schwerin |
| 2 | Woizlawa | 
|
(1969-2019) | Mecklenburg-Schwerin |
| 3 | Hindrek | 
|
(2019-present) | Reuss-Köstritz |
| # | Monarch | Portrait | Dates of Rule | House |
|---|---|---|---|---|
| 2 | Priidu Franciscus | 
|
(1969-2001) | Mecklenburg-Schwerin |