Thomas W. McIntyre

Thomas William McIntyre, affectionately known as “Tom,” passed away peacefully at his home in Tecumseh, Mich., on July 24, 2026. Tom was born in Chicago, Ill., on April 22, 1941, to William Alfred McIntyre and Marjorie Penny McIntyre. On January 29, 1960, he married Martha Warner McIntyre, who preceded him in death.

Tom devoted much of his life to the study and practice of chemistry. He earned a Bachelor of Arts degree from DePauw University in 1962 and a Master of Science degree from the University of Iowa in 1965. In 1967, he received his Doctor of Philosophy in organic chemistry from the University of Iowa. He completed his dissertation, titled “Electrochemical Oxidation of Aromatic Amines,” with his wife typing beside him, his 1-year-old daughter on his lap, and his 4-year-old daughter playing nearby.

After completing his education, Tom worked as a chemist for Eli Lilly with the nickname of “Tigger” for his boundless energy. He later drew upon his lifelong entrepreneurial spirit to establish Kingwood Laboratory, where he produced Moi-Stir 10 and swabs developed as saliva-replacements for cancer patients undergoing radiation. This was later found to be helpful for vocal performers.

Tom was also known for putting his knowledge of chemistry to practical use at home. Over the years, he created cleaning solutions, soaps, health tonics, and numerous home remedies for everything from insect bites to everyday ailments. He was also an avid gardener and shared his love of gardening with his late wife, Martha.

Tom advocated for a healthy environment as an active member of the Human Ecology Action League. He also demonstrated his compassion for those experiencing loss through his work with the Memorial Advising Planning Society. Together, Tom and Martha taught those around them about sustainable living and encouraged others to live simply in order to find greater happiness and fulfillment.

Tom was a beloved father, grandfather and great-grandfather who showed his love and support through his presence, generosity and kindness. His compassion extended to everyone he encountered. He made a genuine effort to learn the names and stories of those around him, including those who made deliveries to his home. He knew his neighbors and caretakers well and cared deeply about them. Whether with family, friends or strangers, Tom had a gift for making others feel seen and valued.

Tom was preceded in death by his wife, Martha Warner McIntyre, and his son, David Allen McIntyre. He is survived by his daughters, Carol Ann Benedict and her husband, Robert Harlow Benedict III, and Lisa McIntyre Fredericksen; his granddaughters, Valerie Benedict and Dana Holhfeld and her husband, Ezekiel Holhfeld; his grandson, Erik Fredericksen and his wife, Marissa Fredericksen; and his great-granddaughter, Iris Holhfeld (Cyrus Fredericksen, great-grandson on the way.)

Tom will be remembered for his brilliant and curious mind, his entrepreneurial spirit, his compassion and love for others, and his deep devotion to his family.

Cremation has taken place. A Memorial Gathering is currently being planned to take place at  Tom’s residence here in Tecumseh, Mich., approximately a few months from now. 

Final arrangements were entrusted to Purse & Son Funeral Home, Tecumseh. Condolences may be offered online at gilpurseandson.com.