Complex sentence: P. W. Huntington formed P. W. Huntington & Company in 1866.The bank was formerly known as The Huntington National Bank of Columbus Huntington built its first 5-story building in 1878.
Split into simpler sentences: P. W. Huntington formed P. W. Huntington & Company in 1866. Which was later known as "The Huntington National Bank of Columbus" Huntington built its first 5-story building in 1878.