Petrus Loosjes

Petrus Loosjes (20 November 1735, Zaandam – 12 January 1813, Haarlem), was an 18th-century writer and Mennonite minister from the Northern Netherlands.

Adriaan, who was born and died in Westzaandam, originally was a lumber dealer but was chosen a Mennonite minister for his community in 1714, in which position he served until 1762.

Petrus trained at the Amsterdam Mennonite Lamist Seminary from 1754-1759 and married Jozina (Sijtje) Oudt, also from Zaandam, in 1760 in his hometown.

In 1778, he wrote an essay in response to the first prize question posed by the Teylers Eerste Genootschap that was founded the same year, and he was awarded a silver medal.

In 1786, he started working on the first sequel to Jan Wagenaar's Vaderlandsche Geschiedenis, which he continued into his later years, while publishing other books with his son.