Complex sentence: William R. was later founder and first president of the Selbyville Bank, was one time Banking and Insurance commissioner for the State of Delaware in the early 20th century, and was an early advocate of the Federal Reserve System.
Split into simpler sentences: William R. was later founder and first president of the Selbyville Bank and was one time Banking and Insurance commissioner for the State of Delaware in the early 20th century. He was an early advocate of the Federal Reserve System.