Dr Thaddeus "Tad" P. Kobylinski

July 24, 1933 ~ March 6, 2020 (age 86)


Dr Thaddeus “Tad” P. Kobylinski of Bethlehem, formally of Prospect.

Dr. Thaddeus “Tad” P. Kobylinski died peacefully on March 6, 2020 in Bethlehem, Pennsylvania at the age of 86.

Tad was born July 24, 1933 in Vilnius, Lithuania to Waclaw and Jania Kobylinski.  He graduated from The University of Warsaw in 1965 with a Ph. D. in Organic Chemistry.   He married Bonnie Lou Meyen on April 8, 1967 in Chicago, Illinois.  Thaddeus worked for both Gulf Oil and Amoco/BP Oil where he invented and/or contributed to over 200 patents and published over 200 papers in the field of organic chemistry.

Thaddeus loved farming.  He began TPK Farms in 1978 in Prospect, PA where he raised dairy cattle and then Black Angus, as well as his beloved Dobermans.  He was also passionate about collecting and restoring antique cars and listening to his extensive 1940’s music collection.  Thaddeus had unwavering faith in the Catholic Church and attended mass regularly his entire life.

Thaddeus is survived by Bonnie Lou Kobylinski, his wife of over 52 years; their seven children:  Elizabeth Sabol of Fox Chapel, PA; Dr. Maria S Kobylinski, MD of Winfield, PA; Christina E. Stoudt of Northampton, PA; David M Kobylinski, Esq. and his partner Chelidha Keller of Fox Chapel, PA; Dr. Maggie J. K. Fehrman, Ph.D. and her spouse Joel Fehrman of Atlanta, GA; and Peter T. Kobylinski, Esq. and his wife Sarah Kobylinski  of South Park, PA; and Katherine A Kobylinski of Prospect; his seven grandchildren:  Abigail Stoudt, Caitlin Stoudt, Lauren Sabol, Stephen Sabol, Tristan Kobylinski, Kaeli Kobylinski, and Zenon Kobylinski.

In addition to his parents, he was preceded in death by his son-in-law Richard Stoudt.

A private mass of Christian burial was held on March 10, 2020 in Bethlehem, PA.

Interment with a graveside committal service will be on Monday, March 16, 2020, Noon at the Crown Hill Cemetery, south Franklin Street, Prospect, with the Rev.  Adam M. Verona, from St Christopher at the Lake Roman Catholic Church, officiating.

Memorial donations may be made to the American Parkinson’s Disease Association at

Online tributes may be made at or send condolences to his family c/o Maggie Fehrman

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Graveside Service
March 16, 2020

12:00 PM
Crown Hill Cemetery
S. Franklin Street (rt 528)
Prospect, PA 16052

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