Lawrence was born into the Berki branch of the gens (clan) Nánabeszter, which possessed landholdings around the capitals Esztergom and Buda in Central Hungary.
[2] Beside that, Lawrence also functioned as the last chancellor of Queen Dowager Elizabeth, the widow of Stephen V and mother of the reigning monarch Ladislaus IV, from 1288 to 1290.
[4] Lawrence donated part of the land (Adriányfalva) purchased by the chapter to Peter, a canon of Požega and his brother, Zah, in exchange for an annual tax in 1292.
Lawrence created the position of lector in his chapter, based on the sample of the cathedral of Pécs.
His date of death is unknown; the next known provost of Požega, Michael appeared in this dignity eventually in 1329.