Henry of Latvia (Latin: Henricus de Lettis; German: Heinrich von Lettland; Latvian: Latviešu Indriķis; Estonian: Läti Henrik; 1187 – after 1259), also known in the English-speaking world as Henry of Livonia, was a priest, missionary and historian. He wrote the Livonian Chronicle of Henry which describes the evangelization of the regions which are now part of Estonia and Latvia during the Northern Crusades. Source: Wikipedia (en)