In 1969, the Hartford National Bank and Trust Company became the first completely owned subsidiary bank of the newly established Hartford National Corporation. After this merger, the HNC had assets totaled over $1.1 billion. The purchase of Connecticut National Bank would almost double the number of banks under its management and increase its assets drastically. The HNC merged with Shawmut National Corporation. Hartford remained one of the two dual headquarters for the corporation until its eventual merger with Fleet Bank in 1995.