With deep regrets and sadness John A Hewitson Founder, CEO and President of Ronan Engineering Co passed away peacefully in his loving wife Sarah’s arms on Monday December 23, 2019 at Henry Mayo Hospital in Valencia, California. In lieu of flowers and cards, donations may be made to Our Lady of Perpetual Help Lyons Ave Valencia or UCLA Cancer Research Beverly Hills. A Ronan Funeral Mass will be announced later.
