ROSE J. "SIS" (SIWICKI) CASSELBERRY Age 87, of Lawrenceville, on Friday, September 4, 2020. Beloved wife of the late William D. Casselberry; loving mother of Rose (Ted) Caveglia, Mary Kay (Jim) Brendel, Deborah Casselberry and Lynne Casselberry; cherished grandma of Amanda Cutler, Jennifer Brendel and James (Kirstin) Brendel; devoted great-grandma of Maddy Brendel and Emma Cutler; dear sister of Edward, Raymond and the late Eleanor, Richard and John Jack Siwicki; basha to Eve (Philip) Bianco, Maya, Audrey and John. In light of COVID-19 and the CDC guidelines, the visitation and burial will be private, limited to immediate family and friends. Family and friends are invited to use the online guestbook link to send condolonces, share a memory or write a tribute. Family and friends are welcomed to attend a Funeral Mass at Our Lady of the Angels Parish, St. Augustine Church, 225-37th Street, Pittsburgh, PA 15201, on Wednesday, September 9, 2020 at 11:00 a.m. Livestreaming of the Funeral Mass will be available at OLASMG.org, by clicking the facebook link. In lieu of flowers, memorial contributions can be made in Sis' name to St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105 or at www.stjude.org. Arrangements by the WALTER J. ZALEWSKI FUNERAL HOME, Lawrenceville. Send condolences post-gazette.com/gb