Banco Santander SA sold Bernard Madoff investments to a teacher and a street vendor, not just to wealthy private banking clients in Spain and Latin America.Branch managers channeled customers with money from property sales or inheritances to private banking salespeople, lawyers for the investors said. A retired school teacher put 300,000 euros ($388,000), half her savings, in a structured product linked to Madoff, said Jordi Ruiz de Villa, an attorney at the Barcelona law firm Jausas. The vendor invested 325,000 euros of lottery winnings in a similar...