Mark C. Jenca, Sr., age 73, Army Veteran of the Vietnam War; was born in Chicago, IL on November 2, 1945, and passed on July 18, 2019, surrounded by his loving family: beloved husband of Janet; loving father of Daniel (Anita) Jenca, Amy (Sam Seghi) Jenca, Jennie (Jesse) Manners, and the late Mark C. Jenca, Jr.; adoring grandfather of Danielle Jenca, Nick Jenca, Ashley Jenca, Max Manners, Jake Friedrichs, Jillian Friedrichs, Mia Luchtman, and Jaxton Luchtman; dear son of the late Cyril & Evelyn Jenca; devoted brother of Barbara (Terry) LaPlante, Adrienne (Bill) McGloon, and Jim (Stacey) Jenca. Mark was a proud member of AA and his sobriety of 13 years. After retiring from IBEW Local Union #701, his life was dedicated to his family and spending as much time as he could with his cherished grandchildren.