|King of Samuelonia|
|Reign||315 AP -|
|Predecessor||Omar VII of Saint Samuel|
|Consort||Catherine of Aethelnia|
|Full Name||Leonidas Nicholias Louis Francisco De Amarr|
|House||House of De Amarr|
|Father||King Omar VII of Saint Samuel|
|Born||22 November 279AP|
Leo, King of Samuelonia and Duke of Mariamburg (Leonidas Nicholias Louis Francisco De Amarr; born 22 November 279AP) is the King of Samuelonia and eldest son of former King Omar VII of Samuelonia and Queen Salmia. His major title is His Royal Highness The King of Samuelonia. On 20th of July 312, Leo married Catherine, Princess of Aethelnia. In January 314, the Royal household announced that the Royal couple were expecting a baby and on the 14th of May 314, Prince Edward was born.
Leo was born at the Royal Dockside Residence, Francisco on 22 November 279AP the first child of King Omar VII and Queen Salmia. He studied at the Royal Franciscan School of Cruis before attending the Royal Charlemont Military Academy, as his father did, where he entered officer training. Upon completion of studies he entered into a career in the Royal Saint Samuel Armed Forces.
Upon completion of his officer's training, Leo was commissioned as a Second lieutenant in the 4th Battalion, Royal Breton Regiment, a regiment of the 1st Royal Saint Samuel Infantry Division. By April 297AP, whereupon he reached two years' seniority, Leo was promoted to the rank of lieutenant.
On 21 September 310, Leo was promoted to Colonel in the 74rd Battalion, Royal Parachute Infantry Division.
On 20th of July 312, Leo married Catherine, Princess of Aethelnia. In January 314, the Royal household announced that the Royal couple were expecting a baby, due in May 314.