William Donald Janssen was born in Marion, South Dakota on January 26, 1932, and passed away in Houston, Texas on April 30, 2021.

He is preceded in death by his wife, Nona Lee Janssen, and his parents, Frederick and Rose Janssen.

William is survived by his children, Pamela Kay Stock and husband Michael James Stock, Steven Barnett Janssen, and Donald Frederick Janssen and wife Pamela Sue Janssen; grandchildren, Matthew Dean Janssen and wife Elizabeth Marie Janssen, Dawn Alyson Janssen, Michael Ryan Janssen, Katy Marie Janssen-Wayman and husband Nicholas Michael Wayman, Stephanie Lee Willis, Donald Michael Yow, and William Ray Yow and wife Lindsey Michele Yow; great-grandchildren, Michael James Willis, Shauna Marie Willis, Zoey Lou Wayman, Janess Mykelle Blackburn, Lilyana Jolie Janssen, Savannah Michele Pavelka, Marcus Jacobe Watkins, Brooklyn Jade Jackson, Kaylee Michelle Yow, Ceraya Lynn Yow, Gracelyn Dawn Yow, and Forest Isaiah Janssen; step-great-grandchildren, Sadie Hanlon, Mason Hanlon, Alexis Sampson, and Heaven Sampson; and great-great-grandson, Kingston Donaldson.