Margaret M. Olsen of Briarcliff Manor, NY (Archville) died on July 8, 2024. Margaret was born on March 22, 1940 to Herbert C. and May M. Schultz Olsen in Ossining, NY. Margaret was a graduate of Sleepy Hollow High School. She worked for Burnham Corporation for 30 years. She was an Executive Secretary to the President and Chairman of the Board. When the company moved to Lancaster, PA in 1990 she retired from the company. She then worked at Sleepy Hollow Cemetery as secretary for over 24 years. Margaret was a long-time commissioner with the Scarborough Fire District (Archville FD). She had one brother, Carl H. Olsen, who predeceased her. She is survived by three nieces, Carolyn Olsen, Debra (John) Marfia and Amy (Leonard) Roman, two great nephews, Jesse and Jake Roman. Visitation will be at Pleasant Manor Funeral Home, Thornwood, NY on Friday from 4-7pm. Funeral Mass St. Theresa’s Church, Briarcliff Manor, NY on Saturday at 10am. Interment following at Sleepy Hollow Cemetery. Arrangements provided by John G. Crawford Funeral Director.