“A son, a father — the whole family — everyone that has been dear to us,” a relative said. A family of four from Massachusetts who were killed when a bus crashed into multiple vehicles in Virginia were traveling to a wedding with a carload of homemade desserts for the celebration. The family wedding will go forward Sunday in South Carolina, but it also will be a time to mourn the loss of Dmitri and Ecaterina Doncev and their two children, Emily and Mark, a relative said Saturday. “A son, a