Charlotte I . Sommerfeld nee Williamson , age 8 5 , late of Palos Park formerly of Beverly . Beloved wife of Robert C . Sommerfeld . Devoted mo ther of Warren and Brian ( Nicole ) Sommerfeld . Proud grand mo ther of Christina (Matt) , Timothy, Austin, Brandon, Jason, and Mar ia . Dear great- grand mo ther of Sadie . Loving sister of Roger ( Melissa ) Williamson and Marilyn (Mahlon) Burbank . Charlotte was a graduate of Northwestern University and worked as a bacteriologist prior to raising her children. She was active in her community, volunteering with Meals on Wheels and various senior related services. Memorial Visitation Saturday, February 13th, from 1:00 p.m. until the time of the Memorial Service 2:00 p.m. at Thornridge Funeral Home (Janusz Family Funeral Service), 14318 S. LaGrange Rd., (9600 W/Rt. 45), Orland Park. In lieu of flowers, memorials may be directed to Peace Village in memory of Charlotte.