Ellen Sinoff of Wilmington, Del.; Frank Williams of West Chester; and Phyllis and Jay Doroshow of Langhorne announce the engagement of their children, Dr. Katy Michelle Williams and Dr. Jonathan Elliott Doroshow.

    Katy graduated from Conestoga High School and the University of Vermont. She earned a D.O. from the Philadelphia College of Osteopathic Medicine, and is currently a resident in obstetrics and gynecology at Lankenau Hospital.

    Jonathan, a graduate of Neshaminy High School and George Washington University, earned a medical degree from the Drexel College of Medicine. He is currently an academic hospitalist at Lankenau Hospital.

    Katy is the granddaughter of Muriel Glassman Auritt of Bala Cynwyd, the late Edwin Glassman, and the late Frank and Althea Williams. Jonathan is the grandson of Thelma Buster of Philadelphia, the late Morton Buster, and the late Florence and Sidney Doroshow.

    Joining in celebrating the couple's happiness are their siblings: Stephanie Williams, Brett and Kyle Williams, Matthew Doroshow, and Jeremy and Stacy Doroshow.

    The couple lives in Philadelphia and is planning a fall wedding.