Brother Scott Hanson shared this news on the Iota Facebook group this morning:

John O. Roark, a distinguished alumnus of Iota Chapter, passed away yesterday. Services will likely be held in Temple, where he lived and practiced law for the past 42 years.

UPDATE 1/25 — Memorial Service:
A memorial service for Brother Roark will be held Saturday, January 30, 2016 at 1:00 P.M. at the First United Methodist Church in Temple. A reception and visitation will follow the service in the Family Life Center of at First United Methodist Church.