Dorothy Cornthwaite McMahon



Dorothy Alois Cornthwaite McMahon was born on July 9, 1921 in Rockville, I.N. and
departed this world during the night of October 29, 2018, following a long illness. She
was the daughter of Homer and Mame Cornthwaite and the sister of Gwen Harrison, now

Dorothy grew up on a rural farm, attended a one-room elementary schoolhouse and
graduated Rockville High School in 1938. She enrolled in Purdue University and
graduated with highest honors in 1943. She moved east and worked for RCA, and later as
Personnel Manager for Harrison Labs and successor company, Hewlett Packard-
Rockaway Division, all in New Jersey. She received her MBA degree from Fairleigh
Dickinson University while in her 60's.

Dorothy converted to Roman Catholicism later in life. She exhibited the highest moral
values during her life and was a beacon of integrity to those that knew her.
As a single woman she lived in Greenwich Village in New York City. She raised her
family in Newark, Cedar Grove, and Warren, N.J., later lived in Morris Plains, N.J. and
most recently in Myrtle Beach, S.C. at the home of her daughter and loving caregiver,
Julia Heinlein.

Dorothy was a highly intelligent, compassionate and intrepid woman who loved life,
laughed & forgave easily and was completely devoted to her adoring children. She was
an accomplished business professional and, in later life, a world traveler & photographer,
having ventured to over twenty foreign countries, including: Iran, Cuba, Egypt, China
and India. Dorothy also greatly enjoyed New York City attractions including art galleries,
museums and attending Broadway & Off-Broadway theater.

Dorothy leaves to cherish her memory her loving family: Sons Richard McMahon & wife
Barbara of Fort Collins, CO, Dr. David McMahon, wife Michelle and grandchildren Paul
Columna & Mollie McMahon of Titusville, FL, Daughter Julia Heinlein of Myrtle Beach,
SC, and Son-in-Law Al Mosca of Kinnelon, NJ, also Nephew Dr. Stephen Harrison and
wife Jeri & Family. Another beloved child, Sharyn McMahon Mosca, is deceased.

To view these details online or to offer words of comfort through the online guestbook, kindly visit,

Burroughs Funeral Home & Cremation Services of Murrells Inlet, (843.651.1440) is honored to be assisting the family.