James H. Kessler III, 91, of Oswego passed away on August 7, 2021, in Port Charlotte, Florida.

Born on October 16, 1929, in Glens Falls NY, he was the son of the late James H. II and Reba (Adsitt) Kessler.

James graduated from Andover High School and went on to earn a Bachelor's Degree from Hobart College. He earned his Master's Degree from the University of Notre Dame. Mr. Kessler was a respected high school math teacher. He worked at Greece Olympia High School in Rochester for ten years. He also taught Math and Computer Science at SUNY Oswego. He married his wife Helen (Olmsted) Kessler in 1952 and enjoyed 58 years of marriage. They raised their five children in Oswego.

Mr. Kessler was very active, athletic, and adventurous. He was an avid golfer and snow and water skier. He also enjoyed scuba diving and horseback riding. James was skilled in carpentry and enjoyed his travels all over the world. He and his wife Helen owned an RV that they used to explore the United States. Above all, he cherished his time spent and memories made with his family.

James is survived by his loving children Deana (Jim) Masuicca of Oswego, James H. IV (Pam) Kessler of Albuquerque NM, Rene Butler of Auburn, Michele (Eric) Steinhouse of St. George Utah, and Charles (Emilda Delgado) Kessler of Fredericksburg VA. He also leaves behind fourteen grandchildren, ten great-grandchildren, and his sister Lee Kessler of Clearwater Florida.

In addition to his parents, James was predeceased by his wife Helen in 2010 and his brother Dr. Richard Kessler in 2021.

Graveside services will be held at Eleven O'Clock, on Saturday, July 23, 2022, at Oswego Town Rural Cemetery.  A celebration of life reception will be held following the service, from Noon- Two O'Clock, at the Oswego Country Club.

Arrangements are under the caring guidance of Nelson Funeral Home.