Jo Ann McMahon, 81, of Lancaster, PA, passed away at Lancaster General Hospital on Wednesday, February 15, 2023. She shared 57 wonderful years of marriage with her husband Dennis R. McMahon.

Born in Titusville, PA, to the late Joseph and Elizabeth (Green) Sheridan, she graduated from Titusville High School. Jo Ann completed her bachelor's degree at Marywood College, and her master's degree in Computing and Education at Rosemont College.

Jo Ann taught school in New York for two years, and then in Puerto Rico for 4 years. After returning to the states, she taught at St. Anne's School for 20 years, where she was also the Librarian. At St. Anne's she started the computer lab, secured a grant from Apple for computers for the Diocese, and her lab became a model for the Diocese. Jo Ann also started a technical support group with interested parents. She was a devout teacher and administrator at St. Anne's School.

Referred to as "Auntie Jo" by her niece Cindy, Dennis and Jo Ann started Auntie Jo's Amish Country Market in Baltimore years ago.

Jo Ann was a devoted parishioner of St. John Neumann Catholic Church, where she served as a Eucharistic Minister.

To family and friends, Jo Ann was a trusted confidant, who always looked for others with great care and concern for them.

Jo Ann and Dennis loved their time in Puerto Rico and their trip to Ireland. She was a great homemaker, seamstress, incredible mom, accomplished cook, and executive. She loved to laugh and play the piano. Jo Ann had an incredible relationship with her sister Mary Kay and her husband Bobby.

She cherished time with daughter-in-law Toni, and attending her grandchildren Devin and Aarin's sporting events, graduations, and other events with them. Jo Ann maintained meaningful long-term relationships with her college friends.

At the end of her life Jo Ann and Denny still enjoyed the simple things in life such as taking a drive through the country and getting special treats every day.

In addition to her loving husband Dennis, Jo Ann is survived their son, Kieran J. McMahon, husband of Toni (Keller), and their children, Devin and Aarin McMahon, all of Lancaster; her sister, Mary Kay, wife of Bobby Roehrer of Ponte Vedra, FL; and several in-laws and scores of nieces and nephews, and great-nieces and great nephews.

A Mass of Christian Burial will take place at 11:00 a.m., Tuesday, February 21, 2023, with The Rev. Michael Culkin as Celebrant, at St. John Neumann Catholic Church, 601 East Delp Road, Lancaster 17601. Jo Ann's family will receive friends from 10 to 11:00 a.m. at the church. To view the Live Stream, go to www.sjnlancaster.org and push the Live Stream symbol.

Final Commendation and Farewell will be in Landis Valley Mennonite Cemetery.

In lieu of Flowers, kindly consider a memorial contribution to the Central Pennsylvania Food Bank , 3908 Corey Road, Harrisburg, PA 17109 or to Hospice & Community Care , P.O. Box 4125, Lancaster, PA 17604-4125.