Grey's Anatomy star Patrick Dempsey strolls his little ones around in a Combi Black Twin Savvy LX. His 7-moth-old sons, Sullivan and Darby, will be very comfortable while on the set with him. According to In Touch the twins will make a debut on Grey's Anatomy soon. That's the only place you will see them though. Patrick and his wife Jillian don't want their children to become child stars. In addition to the twins, the couple also has a 5-year-old daughter, Talula.