Mark C. Armstrong, age 50, of Allendale, passed away unexpectedly in his sleep on Wednesday, October 12, 2016. He was preceded in death by his father, Ivan Vanderhoff/Armstrong; sister, Suzanne Armstrong. He will be lovingly remembered by his mother, Dorothy Armstrong; sisters and brothers, Roxanne and Tom Pikaart, Bill and Barb Armstrong, Tony Armstrong, Lori and David Churn, Cheri and Theron Leet; nieces and nephews, Thomas Pikaart II, Gini and William Norkaart, Kim Pikaart, Kate Armstrong, Ben Armstrong, Alex Churn, Ryan Churn, Pam Churn; and many close friends who are family.  Memorial services will be held Saturday, October 22, 2016 at 2:00 pm at Matthysse-Kuiper-DeGraaf (corner of Avery and Scott) 6651 Scott St., Allendale with Pastor Dennis Gilbert officiating.