Claire DiSebastian, 64, of Lancaster, PA died suddenly at her home on Thursday, July 17, 2025. She was born in Lancaster, PA, the daughter of the late Paul J. Rowan, M.D. and Marian Frances (Simpson) Rowan.

Claire graduated from Lancaster Catholic High School in 1979. She attended Marymount College and Katharine Gibbs Business School.

Claire was intuitive and gifted in her recent caretaking of mentally challenged adults. As a longtime executive assistant for Marilyn Berger Real Estate, her resourceful and engaging manner brought joy to staff and clients alike. The tenth of eleven siblings, she became an aunt early on. To her nieces and nephews, she was sunshine itself. She cherished her children and granddaughters. The Avalon beach was her idea of heaven. Wherever Claire was, music and laughter followed

She is survived by two children, Nicholas DiSebastian (Jaime), of Asheville, NC, Natalie DiSebastian, of Phoenixville, two granddaughters, Stella and Florence, ten siblings, Marian West (Soren), of Lancaster, Margaret Diaz-Cruz, of New York City, Mary Klein (Daniel), of Wilmington, DE, Paul Joseph Rowan, Jr. (Wendy), of Yucon, OK, Alice O'Brien (Kevin), of Wilmington, DE, Anne Pebley (Jesse), Clarksboro, NJ, Andrew Rowan (Colleen), of Reading, PA, Julia Monaco (Thomas), of Havertown, PA, Agnes Scholl, of Lancaster, and Shawn Rowan (Claire), of Glendale, MO, nineteen nieces and nephews, and a special friend Aaron Healey. She was preceded in death by niece Emily West and a brother-in-law Mario Diaz-Cruz.

Relatives and friends are respectfully invited to Claire's Mass of Christian Burial on Thursday, July 24, 2025 at 11:30am at Sacred Heart of Jesus Catholic Church 558 W. Walnut St., Lancaster, PA 17603 with The Rev. Mgsr. Richard Youtz as Celebrant. The family will receive guests at the church on Thursday from 10am-11:30am prior to Mass. Interment will take place on Friday at 10am at St. Joseph New Catholic Cemetery, 170 Charles Road Bausman, PA. In lieu of flowers, memorial contributions may be made in Claire's memory to Caron Foundation Attn: Kelsey Moore PO Box 150 Wernersville, PA 19565.

Claire's Funeral Mass will be livestreamed on Thursday, July 24, at 11:30 AM. To view livestream, please see below: