Your Marius also known as Bob is the son of This Jacobus. There were only 4 of 13 children that lived to adulthood.
Jacoba married Boothman then Brad Lived in Libby
Christine - lived in stevensville, She married Templeton, Brown & one other.
Jacob - lived in Missoula, this is my grandfather.
I have full details on all of the children. I also have the info for their immigration.