John (Jack) Tellinghuisen passed away on Monday, August 18, 2025 as a result of kidney disease and complications from dialysis at Granite State Hospice in Concord, NH.

Jack was born in Harvey, ND on October 19, 1942 to Norma and Tilman Tellinghuisen of Bowdon, ND. He was predeceased by his sister, Barbara; and brother, Roger. He attended local schools in Bowdon and graduated Phi Beta Kappa from NDSU with a degree in Pharmacy in 1965.

Jack married Barbara Lee in 1964. They were married for 61 years. They have three sons: Thomas (Odilia), Timothy (Melissa), and Theodore (Julie).

While working for OSCO Company, he managed pharmacies in North Dakota, South Dakota, Wisconsin, Washington State, and Massachusetts before purchasing McCord-Sweeney Drug in Lowell, Massachusetts, which he owned for 30 years. Upon the business sale he and his wife moved to Marco Island, Florida where he worked for Eckerd Drug. He and Barbara moved to Naples, Florida in 2005. He was a long-time pharmacist at KMart Pharmacy in Golden Gate City. Upon retirement they divided their time between their homes in New Hampshire and Florida. In spite of doing daily dialysis he and Barbara traveled the world with dear friends and visited Europe, Africa, Australia, New Zealand, Brazil, Mexico, and most of the Caribbean. He maintained joint ownership of the family farm with his nephew, Michael Tellinghuisen. The farm has been in the Tellinghuisen family for over 130 years.

He is survived by his wife, Barbara; sons, Thomas, Timothy, and Theodore; three grandchildren, Bella, Kathryn, and Zachary; and numerous nieces and nephews.

Arrangements are by Peaslee Funeral Home, Alton Bay, New Hampshire and Hanson Runsvold Funeral Home in Fargo, North Dakota.

He will be interred in The Cremation Garden in Riverside Cemetery in Fargo, North Dakota.