1576 December 20th John was born in a building cellar adjacent to the Town Hall in Skoczów. During his birth Rakuski’s army was marching through Skoczów. He was baptized by
Fr. Wojciech Gagatkowski in a hospital chapel which belonged to the Catholic Church. John was the fourth son of Grzegorz Maciej Sarkander and Helena Górecka, primo voto Welczowska.
1589 After his father’s death John moved with his mother to Pribor, Moravia, where he studied at the Catholic Parish School.
1593 Started education at the Jesuit College in Olomouc.
1597 John began philosophy studies at the Philosophy Department in Olomouc.
1600 He began philosophy studies at the University in Prague. In 1602 he graduated in logic and philosophy and obtained a bachelor’s degree. In 1603 obtained a master’s degree in the liberal arts and philosophy.
1604 September 6th - he joined the theological department in Graz. After two years he stopped his studies.
1606 John stayed with his brother Nicolaus who was a priest and a dean in Velyki Mezhyrichi. On September 3rd John got engaged to Anna Płachecka. He bought a house in Bern and a garden with a vineyard in Klobuky. A year later, John came back to Graz in order to continue theological studies. Sarkander obtained a doctorate in theology there.
1607 He received minor orders in priesthood in Kromeriz.
1608 John stayed in Opava where he helped his brother Fr. Nicolaus. On December 20th John received subdiaconal orders in Olomouc.
1609 March 19th - cardinal Francis Dietrichstein ordained John as a deacon. On March 22nd a bishop J.Ch. Civalli consecrated him as a priest in the collegiate church under the invocation of St. Peter and Paul in Bern.