Complex sentence: First Horizon National Corporation, the parent company of First Tennessee Bank, also includes the subsidiary First Tennessee Bank National Association, as well as the First Horizon family of companies, which includes First Horizon Home Loans and First Horizon Bank.
Split into simpler sentences: First Horizon National Corporation, the parent company of First Tennessee Bank, also includes the subsidiary First Tennessee Bank National Association. The First Horizon family of companies includes First Horizon Home Loans and First Horizon Bank.