Diane L. Costanzo

September 14, 1954 ~ July 12, 2020 (age 65)


Diane Mattesen Costanzo, age 65, passed away on Sunday, July 12, 2020 after a short but fierce battle against cancer. Diane was born in Stafford Springs, CT and lived in Clearwater, Florida.  Diane’s husband, John Costanzo, passed away last year and she loved and cared for John during their 28 years of marriage. Diane is survived by her mother, Leone Mattesen of Northport, FL. Her father, Louis Mattesen, of Stafford, CT was predeceased. Diane grew up with a large family and is survived by her four sisters, Dorothy Drobney of Willington, Cheryl Pedemonti of Tolland, Karen Michaud of Stafford and Andrea Mattesen of Wethersfield. She also leaves behind her brother, Louis Mattesen, Jr. of Sherrills Ford, North Carolina. Diane also had eight nieces and nephews plus eight grand nieces and nephews. Diane graduated from Tolland High School in 1974.


Diane will be missed by all of her friends in Clearwater including members of the American Legion Post 7. Diane (and John) enjoyed events at Post 7 which they would attend on a regular basis. Diane loved to play bingo and to dance to music provided by her favorite bands. The members of Post 7 were like a second family to Diane while she was living in Clearwater. The Mattesen family appreciates all the love they provided to Diane in both good times and bad.


A private Celebration of Life will be held in Connecticut on July 16, 2020 at 6:00 pm.

To send flowers to the family or plant a tree in memory of Diane L. Costanzo, please visit our floral store.


Celebration of Life
July 16, 2020

6:00 PM

© 2021 Sunset Point Cremation. All Rights Reserved. Funeral Home website by CFS & TA | Terms of Use | Privacy Policy