Laurentius Petri was a prominent Swedish clergyman who served as the first Evangelical Lutheran Archbishop of Uppsala. Born in Örebro around 1499, he became a central figure in the Swedish Reformation alongside his brother, Olaus Petri, and King Gustav Vasa. Throughout his forty-two-year tenure, he worked to establish the Lutheran character of the Swedish Church, often defending its autonomy against royal interference. His extensive writings and leadership helped shape the foundational ordinances of the national church.