Complex sentence: The Knickerbocker Trust assets were acquired by Columbia Trust Company, forming the Columbia-Knickerbocker Trust Company, which eventually became Irving Trust Corporation, which was in turn acquired by the Bank of New York in 1988.
Split into simpler sentences: The Knickerbocker Trust assets were acquired by Columbia Trust Company, forming the Columbia-Knickerbocker Trust Company, which eventually became Irving Trust Corporation. It was in turn acquired by the Bank of New York in 1988.