I am researching the family of Charles Nickolaus who is show by the census of 1860 as living in St. Louis Missouri with John Nickolaus and Leopold Nickolaus. I assume they must be brothers or cousins. I have traced the Leopold Nickolaus family but cannot make a connection. John Nickolaus seems to disappear, at least from St. Louis. All were from Baden. Does anyone know how these threads connect?