I don't know if you are still seeking information on Gordon (Arner), it's been a while since anyone posted anything to you.
I was married to Fred's, great neice, Barbara VanDoorn. The family lived in Essex, Ontario ... a relatively short drive from Harrow. The VanDoorn boys, Gordon and Richard still live there and operate VanDoorn Farms. Barbara's mother, Jane, was Fred's neice. Unfortunately, Jane has passed over now, but I do know that Fred was a highly successful chemist and was responsible for a number of chemical breakthroughs, one of which was the invention of the special coating that is used on pills and capsules ... even today, which made him a multi-millionaire in the late 40's and 50's. He was the CEO of Michigan/Ohio based ARNER CHEMICALS (or PHARMACUTICALS) until sometime in the late 50's or early 60's.
The Arner family still have land holdings in Harrow, Kingville, Essex and Leamington in Southwestern Ontario. If you look on a map of the area, you will find the Arner Town Line, Arner Township and the Arner Concession (Roadway).
If you would like to email me ... feel free. Anything I can help you with ... I will.