|King of Morstaybishlia (Staynes-Caltharus)|
|Reign||29 August 1515 - 1 December 1520|
|King of Staynes|
|Reign||11 September 1482 - 29 August 1515|
|Born||14 March 1462|
Sani Bursil Royal Palace, Sani Bursil
|Died||1 December 1520 (aged 58)|
Kentar, Dogrugia, Caltharus
|Spouse||Katarina Emerada (m. 1502)|
Lambertus III, (14 March 1462 - 1 December 1520) was King of Staynes from 11 September 1482 - 29 August 1515, where he was crowned King of Morstaybishlia until his death. He was known as Lambertus the Great and the First Emperor of the Morstaybishlian Empire because of his success. He was the second of six children of Theobald.
By the age of 18, Lambertus had been given an army to put down rebellions in Kormistazm against his father. Lambertus was a central commander during the Battle of Caltharus in 1515, leading the campaign in spite of a general disagreement showed amongst his most trusted. However, from January to September that year, Lambertus scored a multitude of victories, slaying the rebellion which had taken down the Caltharusian throne a few years before.