A family of four from Massachusetts who were killed when a bus crashed into multiple vehicles in Virginia were traveling to a wedding when tragedy struck early Friday. The family wedding will go forward Sunday in South Carolina. But a relative says it also will be a time to mourn the loss of Dmitri and Ecaterina Doncev and their two children, Emily and Mark. A fifth person also died. She is a 25-year-old from Worcester, Massachusetts, who was in an SUV. A federal investigator plans to speak to reporters about the crash Saturday.