O'DONNELL, Catherine Mason "Maisey" Died in Boston, MA on Friday, April 25, from injuries sustained in a car accident in Florida. Born in Nashville, TN on October 16, 2006 to Elizabeth Keating O'Donnell and Christoph Tobias O'Donnell, Maisey was raised in Concord, MA, where she was a senior at Concord-Carlisle High School. Maisey was a gifted athlete and student. She was the two-time Massachusetts MIAA Division I State Diving Champion and was undefeated in her Junior and Senior seasons. She was the three-time North Sectionals Champion and Dual County League Champion and a four-year varsity letter winner. In club diving, as a four-year member of Boston Area Diving, she earned AAU All-American honors her junior year and competed at USA Diving Nationals and Red, White and Blue Nationals. Maisey also excelled academically. She was an honors student at Concord-Carlisle High School. She was a member of the National Honor Society and a National Merit Commended Scholar. She was accepted to the Class of 2029 at Williams College and was eagerly looking forward to diving for the Ephs. Maisey was beautiful, inside and out. She was humble, ethical and highly intelligent. She could perform under pressure and rise to the occasion. She was a tremendous friend, sister and daughter. She was giving and kind, especially with the many younger divers in the diving community. She led by example, lifting newcomers and celebrating her fellow competitors. She loved Taylor Swift, Crumbl and her daily iced coffee. She made sure her hair was done, regardless of how little she had slept. She was a self-described optimist. Maisey is survived by her parents and sister, Emery "Emmy" C. O'Donnell; her great-grandfather, Thomas L.P. O'Donnell, Sr. of Hingham, MA; her grandparents, R. Keating Hagmann and Ann R. Hagmann of Cos Cob, CT, her aunts Caroline R. Hagmann of Stamford, CT, and Anna C. O'Donnell and her husband, Bulent Ceylon of Bangkok, Thailand; her uncle, Tilman J. O'Donnell and his wife, Melinda Kinnaman of Stockholm, Sweden; and her four cousins. Family and friends will gather to celebrate Maisey's life during Visiting Hours at Dee Funeral Home, 27 Bedford Street, CONCORD, MA on Friday, May 2, from 4 to 8 pm. Her Funeral Mass will be celebrated on Saturday, May 3, at 1 pm, in St. Bernard's Church at Holy Family Parish, 12 Monument Square, Concord Center. Additional seating and streaming of the service will be available at First Parish, 20 Lexington Road, Concord Center. A live stream link will be shared on the funeral home website. In lieu of flowers, the family has asked that donations be sent to the Maisey O'Donnell Fund, a fund at the Community Foundation for MetroWest (
https://www.communityfoundationmw.org/maisey-odonnell-fund). The fund will benefit the diving community and facilities in Concord and the greater Boston area. Nothing would make Maisey happier than to see the local diving facilities improved for the benefit of future divers to allow them grow through diving, as she did. Checks may also be mailed directly to The Maisey O'Donnell Fund, c/o Community Foundation for MetroWest, 3 Eliot Street, Natick, MA 01760 or simply call the foundation directly to make a donation. Arrangements are entrusted to Dee Funeral Home & Cremation Service of Concord, MA. To share a remembrance or photo of Maisey on her tribute page, visit
www.DeeFuneralHome.comPublished by Boston Globe from Apr. 29 to Apr. 30, 2025.