Composer, Organist. He is probably best known for his secular work, "Italian Cantiones for three voices" (1608), his only published music composition. His only other two music compositions including, "Miss Baci amorosi for five voices," and "Canon," were both unpublished. He flourished from 1593 to 1625, but his exact date of birth, his exact date of death is unknown, and his burial location is currently unknown to historians. He was known to be Danish and also worked under the name of Trudo Haggaei Malmogiensis. His first work "Italian Cantiones for three voices," was published in Hamburg, Germany, in 1608, under his Latinized name of Theodoricus Sistinus. He studied music under Laurentius Nicolai, a Norwegian-born Jesuit musical mentor, and spiritual adviser. He later became the church organist for the Vor Frue Kirke in Copenhagen, Denmark, on June 23, 1593. He also studied in Venice, Italy, from 1599 to 1600, before becoming a royal commissioner to King Christian IV in Prague, Czechslovakia, in 1600. He is also supposed to have taught court and received subsidies from the royal treasury from 1609 to 1611. Two years later in 1613, the King published a letter stating that all men of the "Roman Catholic" religion must leave Denmark. He had been suspected of being on the Pope's payroll as early as 1604 and was then informed of a ruling made in the governing body of Copenhagen University in Copenhagen, Denmark, on September 15, 1613, that, since he had Catholic sympathies, he should not be allowed to continue as the organist of the Vor Frue Kirke in Copenhagen, Denmark. He was successfully removed as organist because of these views and he was replaced as organist by Johan Meincke in 1615. He was last known to be living in Danzig, Germany, later Gdańsk, Poland, in 1625.