Condolence: My sincere condolences on your loss. I pray that memories of happier times will see you through your time of grief!
"God gave us memory so we might enjoy roses in winter."
I am a respected researcher of Mennonite genealogy, and would like to complete your family and ancestry, am unable to do so given his obituary information.
My on-line project contains over 475,000 individuals, including more than 5.000 Janzens, but major sources do not show anything about his wife/your mother's family. Please contact me at an appropriate time if you are willing to share/exchange details. Thank you. All information about living individuals is suppressed to protect your/their privacy.