One nation, under insurance, with financial security for all. National Life Group, the marketing name for National Life Insurance Company and its affiliated companies, is a mutually owned insurer dating back to 1848. Today, National Life Group offers a range of insurance and investment products throughout the US through its namesake National Life Insurance Company and other subsidiaries, including Equity Services (financial products broker/dealer), Life Insurance Company of the Southwest (insurance and annuities), National Retirement Plan Advisors (a third-party administrator), and Sentinel Investments (mutual funds, retirement plans, and institutional investment accounts).