Roberta Mary Duffy of Bowie, MD, passed away peacefully on November 29, 2014 at the Burnett House in Prince Frederick, Maryland. She was the beloved wife of the late Charles F. Duffy, Jr; loving mother of Susan Milstead and Patricia Ottenwaelder; caring mother-in-law to Darrel Milstead and Thomas Ottenwaelder. She was the adored grandmother of Melissa, Ashley, Ryan, Jake, Camryn and Casey; loving niece to Tena Milazzo; special cousin to Valerie Johnson, Laura Sayre, Marilyn Monahan; and dear sister-in-law to Mary Bernaski. She leaves behind many dear friends especially Philip Bunch. Roberta loved many things especially travelling, crocheting, and collecting jewelry. She will be greatly missed by all knew her. Please consider making a donation to the Calvert Hospice at www.calverthospice.org or the National Ovarian Cancer Coalition at www.ovarian.org.