Birth date: Nov 10, 1933 Death date: Dec 23, 2025
Mary Teresa O’Day Giesenhaus, 92, passed away surrounded by her family on December 23, 2025, at the home of her daughter Cathy in Frederick, Maryland. Mary was born in New York City on November 10, 1933. She grew up in the city w Read Obituary
From John Sullivan Cousin
How lucky am I to have Mary as a cousin and a lifelong friend. Every conversation we had was so uplifting. I always looked forward to her humor and advice. Mary will always remain in my heart, thoughts and prayers
John
From Mary Sullivan Kelly
Cousin
I have many memories of Mary and her sister Noreen visiting my parent’s apartment in New York City. We all always enjoyed their company. I was delighted to be in Mary and Bills wedding party!! We had fun!
Thrilled that you and your family shared in our Celebrations . I will miss you !
Love and prayers until we meet again
Cousin Mary Kelly
I just loved being with Aunt Mary. She was a bright light and she all-ways made me laugh.
It was so easy being in her company because she made me feel comfortable and care free.
Our Thanksgivings in VA and our times at the beach were amazing and crazy fun too.
I miss my Aunt Mary so much however when I close my eyes I see her beautiful smile and I can hear her calming voice.
Thank you 🙏 for all the memories and all the love you have given to me.
Miss you and love you. ♥️
