Kalas Funeral Home & Crematory

Margaret Mary Cannon, 77, passed away peacefully on Monday, October 6th, 2025, in the home she shared with her devoted husband of 16 years, Richard Horne. One of five children, she was born on August 27th, 1948, in Wilmington, DE to the late James and Genivieve Cannon.  She is predeceased by her brother, James Cannon (Nanette), and survived by her beloved younger brother, Joseph Cannon (Nahid), sisters Catherine and Mary Elizabeth, and daughter Alyssa Cozzillio (Trey Capozzoli). She also leaves behind her amazing “bonus” children, Jennifer Roman (Steve), Daniel Horne, Shannon Pressley (Duncan), and Sky Horne (Amanda); grandchildren Owen, Eliza, Cheyenne, William, August, Evelyn, and June; and several nieces and nephews and their children.   

Margaret graduated from the University of Delaware with a Bachelor of Art’s degree in French and went on to earn a master’s degree in psychology and a doctorate in pastoral counseling from Loyala College.  She was a member of the Anne Arundel County Public School System for over 35 years, serving first as a French teacher and guidance counselor, then ultimately as a dedicated school psychologist at Broadneck Senior High School in Annapolis, where she worked until her retirement in 2013. Students of all ages found a confidante, ally, sounding board, advisor, advocate, comforter, and friend in “Dr. Cannon”, and it was through her that they could find both a voice and their way when it seemed no one else would listen or help light the path ahead. 

Margaret loved life, and she truly lived it the way a life is meant to be lived. Whether she was adventuring the globe with her family and friends, scrapbooking in her crafting space, perusing the greeting card selection at Barnes and Noble, or eating an ice cream cone somewhere on the water, she was always in her element-- joy. She could enjoy an afternoon on the Isle of Capri and breakfast at the Double T Diner in equal measure if she was spending time with the people she cared about most, and it was a precious gift for them to be in the company of her beautiful and gracious spirit.  

A memorial gathering for Margaret will be held on October 19, 2025, at 1:00 PM at Kalas Funeral Home & Crematory, 2973 Solomons Island Road, Edgewater, MD where a memorial service will begin at 2:00 pm for those wishing to say goodbye, share a memory, or simply pay a quiet visit to the family.   

Condolences may be made by using the Memories tab on this page.

Margaret Mary Cannon

Margaret Mary Cannon

Margaret Cannon Services

Memorial Gathering

Memorial Service