Paul Kulbusch was born on 13 July 1869 (25 July 1869 by today's Gregorian calendar) in Pootsi, Pärnumaa, in the southwest of present-day Estonia (then part of Imperial Russia). Kulbusch graduated in 1894 from the St. Petersburg Theological Academy with a master’s degree and soon became a priest at the Estonian Orthodox Church of Saint Isidore in St. Petersburg, where he oversaw the expansion of church institutions and buildings and actively reached out to the Anglican church.
In 1917 a plenary council in Riga elected Kulbusch to be bishop of Reval (modern Tallinn, then a vicariate of the Riga diocese). He was consecrated as Bishop Platon on 31 December 1917. It was a tumultuous time. World War I was raging on, Russia's emperor had been overthrown, and Estonia yearned for independence, which Platon staunchly supported. Under the threat of German invasion, Russian troops withdrew from Estonia, enabling the declaration of Estonian independence on 24 February 1918, only to be ended by German occupation days later. During the occupation Platon traveled extensively through Estonia, visiting parishes by horse.
Following the German Revolution, in November 1918 Germany formally handed over political power to the Estonian national government. In response, Bolshevik Russia invaded, attempting to regain control over the territory. At this time, Platon was in Tartu (Dorpat), having fallen ill with pneumonia. The Bolsheviks took Tartu on 24 December, and on 2 January Platon was arrested and imprisoned in a cellar. On 14 January 1919, he was executed along with two other priests, Michael Bleive and Nikolai Bezhanitsky, just before the city was retaken by the Estonian Army.
- "Platon, Bishop of Estonia", Estonica - Encyclopedia about Estonia, Estonian Institute.
- Poska, Jüri. "Bishop Platon - His Life And Martyrdom", Estonian Apostolic Orthodox Church website.
- Historical background of Orthodoxy in Estonia, Estonian Orthodox Church of Moscow Patriarchate website.
- Shubin, Daniel H. A History of Russian Christianity, Volume IV, Algora Publishing, p.56, 2006.