Your family legend about Joseph and Louis are accurate. They went to
Shasta county for Gold, which angered their father so much that they were barely mentioned in the will.
Tragically, Louis/Lewis was murdered on 02 Jun 1863 at Little Cow
Creek,
Shasta Co., California for his gold. There is a one-line blurb in the Alta
California newspaper. Lewis was buried in the Catholic Old Shasta Cemetery.
Joseph married Suzanna Kurchenbach on 15 Jul 1860 in Shasta, CA.
Maary Anne
Yank, the youngest sister, married John
Grom who went South to fight with the Confederates in the Civil War. I have not found anyuthing on this line.
The entire family originated in Beinheim,
Bas Rhin, Alsace, France. Their line can be traced to about 1700 in local church records.