text: So well-known was his skill as a Senator throughout this period that Webster became the northern member of a trio known as the `` Great Triumvirate '' , with his colleagues Henry Clay from the west and John C. Calhoun from the south .
simplified: Webster became the northern member of a group known as the `` Great Triumvirate '' . They included his colleagues Henry Clay from the west and John C. Calhoun from the south .