Notes:
Willem's signature is from a 1663 document which included his half brothers, Abraham and Jacob Momma before they were enobled.
Data compiled by Udo Momma. (deceased)
Data contributed by Frederick Roberts Reenstjerna. (deceased)
The encyclopedia entry on Momma:
Momma, family of industrialists, originally from the Aachen region. The brothers Villem (died 1679), Abraham (1623-90) and Jakob (1625-78) came to Sweden via Holland around 1640. The two latter were in 1669 raised to the nobility with the name Reenstierna. The brothers founded a number of important factories and other economic companies, which are well known thanks to the archives they have left, extremely valuable for the 17th century economic history of Sweden. A great grandson of Villem Momma was Peter Momma mentioned below.
[Heirat DTB 438/44 Amsterdam (syn oom Volckwijn wird als Zeuge genannt).]
Loes Muller states that Willem first visited Sweden in 1621
Three brothers, Willem, Abraham and Jacob Momma moved to Sweden and engaged in trade and service operation, which became one of the country's most significant. Abraham came in 1644, Willem in 1646 and Jacob in 1647. They had the privilege of mining in Masugnsbyn and Svappavaara and even went in company landscape with Arendt Grape who in 1646 received the privilege of rock movement in Torne Lapland and landscaped Kengis works .