Hello - I was googling Jonas Calvin Whallon and came upon this old thread...while I don't have any detailed info regarding his lineage, I just wanted to let you know that he was married to my grandmother, Anne M. Whallon. While he was only my grandfather by marriage, he was an amazing one, and I loved him dearly. Spent my childhood years at their farm in Oregon nearly every weekend, and enjoyed many family gatherings with Glen, Calvin, Evelyn and their children. Are you related? Would love to hear what else you may have found out about him!