Gladys D. Osterman
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Gladys D. Osterman

Tarrytown - Gladys Dorrance Osteman passed away peacefully at her home in Tarrytown, New York on Monday, December 11. She was 92 years old. Daughter of Ann Levine and David Dorenz, she grew up in New York City and Yorktown Heights where she attended Shrub Oak High School. She earned a Bachelor of Arts from the Cooper Union School of Arts and a Masters degree from New York University. Gladys and her husband, Herb (passed 2014), settled in Tarrytown in 1957 where they raised two boys.

Gladys had a lifelong passion for literature and the visual arts. She read extensively in poetry and philosophy, as well as feminist theory, art criticism, and cultural theory. Her artwork spans from abstract oil paintings to watercolor landscapes and also included explorations through photography, etching, and ceramics.

Gladys taught grade school art, and was a volunteer teacher at Abbott House in Irvington. She was a volunteer for WBAI, ran a children's theater program that brought performances to Sleepy Hollow High School, and was politically active, protesting against the Vietnam War and working to ban above ground nuclear testing. Later, she and her husband, Herb, were instrumental in the preservation of the Grove Street Historic District, and was one of the community volunteers who successfully fought to save what is now Neperan Park from becoming a multiunit housing development.

Gladys had a particular flair for life and never compromised her own individuality. She was devoted to her family, and taught her children to appreciate the world through her talent in art. In addition to reading and creating art, Gladys loved nature, gardening, and the various pet cats who were her companions over the years.

Gladys is survived by her half sister Dorothea Dorenz, sons David (Laura) and Jonathan, and grandchildren Cybele, Dan, and Mira.

Visitation will be at Coffey Funeral Home on Sunday from 1PM to 3 PM. Services will be private. To leave condolences, visit

In lieu of flowers please make donations to the American Civil Liberties Union.

Coffey Funeral Home, Inc.

91 North Broadway

Tarrytown, NY 10591


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Published in The Journal News on Dec. 13, 2017.
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16 entries
December 22, 2017
The Kangas kids help in the garden at Sagaponic
Jennifer Sepez
December 22, 2017
Good times with Gladys
Jennifer Sepez
December 19, 2017
Dear Jon -

Sorry to hear about your loss. I know losing parents can feel unmooring. I hope you take care of yourself and make it through this difficult time as well as can be hoped.
December 18, 2017
"Death ends a life, not a relationship." -Robert Benchley

The way you cared for your mother when she was so vulnerable showed remarkable skill and devotion. Any mother would be proud to have a son like you. I know I would.
A Mom Friend
December 18, 2017
Dear Jon,

I am very sorry to hear of your mothers passing. You did so well taking such loving care of her and your father, and I hope you find the love and solace you need. Much love to you and your family from me, I am thinking of you.
Joanna Hartell
December 18, 2017
Condolences and with thoughts are with you during this trying time
December 17, 2017
Jon, my condolences to you at this time of great loss. As I myself was a caregiver for my mother in her last 4-plus years, I just want to say that if you ever want to reach out, please feel free to reach out. Peace, Bing (
Bing Aradanas
December 17, 2017
Beach at Sagaponic, photo by Crystal
Jennifer Sepez
December 17, 2017
Memories of a lovely time in the garden at Sagaponic and how hard you worked (Jon) so Gladys could spend summer days at the beach house and the way she laughed when Herb called her Youngster! (when they were both in their 90's).
Jennifer Sepez
December 16, 2017
Love you JonnieO
December 16, 2017
I'm so sorry to hear about your mothers Passing. I'm sending you hugs and good thoughts. Please take good care of yourself, even when times are hard.
Crystal Roth-Sepez
December 16, 2017
Jon, I'm so sorry for your loss. I'm rather awestruck at how long you cared for your mom while her body was failing her. I know what difficult work that can be, having done so for only six months, with mine. I hope you give yourself some time to recover. And don't be surprised if you find her watching over you. ❤
April Thatcher
December 16, 2017
Thinking about you. --Sharv
Ben Sharvy
December 16, 2017
Dear Jon, I'm so sorry to hear of your loss. I admire you for being there for your mother as she got old. You were a good at taking care of a household at the Ponderosa.

My brother started working somewhere near Tarrytown. He commutes from CT. Maybe we can get together when I visit next year.

I used to not believe in ghosts, spirits in the afterlife, but now I kind of do. At least a 40 day bardo like in buddhism. Interested in your experience.

Love to you. May memories of Gladys be a blessing
Becky Chiao
December 16, 2017
Jon, I'm so sorry for your loss. Sending all my love and strength. ♥♥
Constance San Juan
December 16, 2017
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