Anton Jensen's 3 sons
Gus, Albert, Fred

Gus Jensen is father of Ken Jensen
Albert Jensen is father of Grace (Jensen) Schatz
Fred Jensen is father of Joyce (Jensen) Schroeder

Esther (Jensen) Popp -- sister to Fred, Albert & Gus Marilyn (Popp) Nelson is the granddaughter of Esther and you can read about this family on the Manning Centennial on the web.
Click on Manning Family - P 390 - 403 on the left side then scroll to Otto Popp on the right side.