Original: The 1999 merger of Banco Santander ( founded in 1857 ) and Banco Central Hispano ( founded in 1991 ) following the merger of Banco Central ( est . 1919 ) and Banco Hispanoamericano ( est . 1900 ) ) , created Banco Santander Central Hispano , or BSCH .
Simplified: Banco Central Hispano was founded in 1991 . In 1999 , Banco Santander and Banco Central Hispano merged , creating Banco Santander Central Hispano , or BSCH .