Terry McKeen III
| His Royal & Imperial Majesty | |
| Terry McKeen III | |
|---|---|
| Prince of the Grand Principality of Arcadia Duke & Viscount of Amesston Arc-Prince of Zeprana Head of the Arcadian Commonwealth | |
| |
| McKeen sometime in late May, 2022 | |
| Prince of Arcadia | 20 May 2022 - Incumbent |
| Coronation | 18 May 2022 |
 Prince of the Grand Principality of Arcadia | |
20 May 2022 | |
| Prime Minister | Conor Newman |
12 June 2022 | |
| Prime Minister | Manggala Alif Prasetia |
| Predecessor | Raditya Widyawisesa |
| Born | June 14, 2008 Lawrence and Memorial Hospital, New London, Connecticut |
| Birth name | Terry Arthur McKeen III |
| Ethnicity | White |
| Home town | Worrell City |
| Occupation | Inter-micronational politician & Prince of Arcadia |
| Religion | Catholic |
| Signature | 
|
| Nickname(s) | Terry III |
| Allegiance | Grand Principality of Arcadia |
| Rank | Commander-in-chief |
| Awards | Order of the Arcadian Eagle |
Terry Arthur Mckeen III (born 14 June 2008) is an Arcadian micronationalist, diplomat, and is the founder incumbent Prince of Arcadia and is the first and only Monarch in the southern Rhode Island Sector. He was born in the early 2000's and rose to power in micronationalism in 2021 when he founded the Federal Republic of Zeprana with Charles Madgett, he soon gained power in the Empire of Ela'r'oech during Zeprana's time as an Elarian Realm with him becoming the speaker of Elarian Parliament soon after joining the nation. In May of 2022 during the 2022 Zepranan Civil War he was deposed as President, with him regaining power when he launched the 2022 Arcadian War of Liberation on the Cunningham-led Zepranan Workers Government of the Federal Republic of Zeprana and formed the Dominion of Zeprana. He has also served previously as the President of Worrell, Federal President of Zeprana, Prime Minister of Zarkyiv, Prime Minister of Norton and is currently serving as the Vice President of Richensland, Prince of Arcadia, as well as numerous other offices in various nations. He is primarily notable for his role in Commonwealth of Arcadian Nations with him being the head of the Commonwealth and the Monarch of its leading nation, Arcadia. He is also the founder of the Commonwealth of Arcadian Nations, and is the founder of the Grand Principality of Arcadia; he is also known for his role in the Dilu War, Zepranan Civil Conflict, as well as the 2022 Arcadian War of Liberation.