Hi Sarah,you must be Sarah Jane Zepnick my 3rd cousin.
Here's how we are related.Your gr gr grandfather Lorenz Mirsberger was also my gr gr grandfather.His daughter Maria was my gr grandmother.Her son Frank Hertel was my grandfather.Helen Hertel is my mom and my name is Bob Fessler.
One item you mentioned which I have different in my database.Daniel Joseph Zepnick b.1838 d.1919 married Anna Marie Holtschick b.1834 d.1870 in 1860.Daniel Joseph Zepnick then married Theresia Mach b.1845 d.1903 in 1873.Wenzel and Franziska were both children of Anna Marie according to my records.
I have a lot of information on your dad's side of the family but nothing on your mom's side (Jeanne Theresa VanLaanen?).I show you with 9 brothers and sisters and on your dad's side you must have about 11 aunts and uncles.You have about as many 1st cousins as I do.
I have a picture of Wenzel Zepnick if you'd like it.Nice talking to you. Bob