Jan Lundberg, a member of the well-known...

Jan Lundberg, a member of the well-known Lundberg family of gasoline marketing analysts, has sued his sister and mother in the latest chapter in a highly visible family feud. Lundberg wants the family company--which publishes the Lundberg Letter, a widely quoted newsletter on gasoline marketing and pricing--to pay him more than $420,000 in lost income and attorney fees in the long-running battle. Jan Lundberg alleges that the family has interfered in his attempts to set up a gasoline industry research company in Fredericksburg, Va.