He was 94 years old.
Amby was born on November 16, 1919, to Ernest Priestley and Emma Jane Brown in Lower Merion Township, a suburb of Philadelphia.
After high school he studied accounting at Pierce College.
In WWII he flew P-51 fighter planes in France as part of a photo reconnaissance unit.
In 1950 Amby moved with his wife and sons to Pasadena Park in the Spokane Valley.
Amby worked for many years in various positions at Jensen-Byrd Company, a wholesale hardware distributor.
At home, he remodeled the house, made furniture, and tended a large garden.
He assisted with the leadership of a Boy Scout troop.
He was an active member of Millwood Community Presbyterian Church.
Amby loved the forests and mountains of Eastern Washington.
He spent many hours trolling the big lakes of the Inland Empire and fly fishing its streams.
In retirement he became an avid birder and a member of the Spokane Audubon Society.
One of his proudest achievements was participating in the successful effort to establish the Dishman Hills Natural Area in the Spokane Valley.
Amby is survived by his wife of 70 years, Anna Willene Squibb, currently of Bellevue WA; a sister, Olive Irwin, of Mohnton PA; three sons: Ernest Priestley (Evelyn) of Seattle WA, Greg Priestley (Kim) of Renton WA, and Wesley Priestley (Margie) of Knoxville TN; seven grandchildren: Gilbert Priestley of Seattle, WA, Amy Priestley of Bothell, WA, Alex Priestley of Renton WA, Anna Moles (Todd) of Knoxville TN, Mark Priestley of Knoxville TN, Mary Francis Carufe (Joe) of Knoxville TN, and Sarah Priestley of Knoxville TN.