Dom Diniz o Rei-Lavrador, o Rei-Poeta, o Rei-Trovador
Culture was another interest of King Denis.
He had a troubador with a fondness for literature and wrote several books himself, with topics ranging from administration to hunting, science and poetry. His best known is the Cantigas de Amigo which are a collection of songs on love and satire, which helped contribute to the troubador poetry of the Iberian Peninsula.
All told, 137 of his songs (more than any other poet), in the three principal genres of Galician-Portuguese lyric, are preserved in the two early 16th-century manuscripts, the Cancioneiro da Biblioteca Nacional, the Cancioneiro da Vaticana. A spectacular find in 1990 by American scholar Harvey Sharrer brought to light the Pergaminho Sharrer, which contains, albeit in fragmentary form, seven cantigas d'amor by King Denis with musical notation. The same poems are found in the same order in the two previously known codices. In his day, Lisbon was one of Europe's centers of culture and knowledge. The University of Lisbon (today's University of Coimbra) was founded by his decree Magna Charta Privilegiorum, the first Portuguese University. He was also a troubadour.
Denis is buried in the Monastery of Saint Denis of Odivelas, a Cistercian monastery founded by him in 1295.