Near Marienburg 1850s. In the county of Stuhm (Braunswelde) or nearby. I have been told the general area is called Malbork today (was Marienburg).
The area of Braunswalde is now known as Gosciszewo, Poland I have been told many times.
I have not been able to locate any Gruns in that area. I did see an Anna Grun died and buried in Konigsdorf which is located nearby according to the maps that I have.
Any Grun connection would be helpful. Father of Francis Michael born 1857 was Joannes. Mother was Anna Zeilinski (according to baptismal records of children)