Age 90, passed away on March 3, 2018. Graduated from Oxford University, served in the Royal Navy, became a USA citizen in 1969. He also graduated from the University of Pittsburgh Graduate School of Public Health in 1967. Dr. Armstrong enjoyed his retirement as a Master Gardener, volunteering at Phipps Conservatory. Dr. Armstrong was preceded in death by his wife, Audrey Armstrong. He is survived by his daughter, Alexandra Armstrong (Scott Steven Prontiker); son, Justin Allan Bridges (Beth) Armstrong; and grandson, Brian Michael Armstrong. Memorial Service will be held at a later date. Details will be on Facebook. Memorial contributions may be made to the Alzheimer's Association Pittsburgh Chapter (www.alzdn.org) or Shepherd Wellness Community (swonline.org). Arrangements entrusted to ANTHONY M. MUSMANNO FUNERAL HOME , INC.