William S. Knight and family in Shawnee 1928

William S. Knight was born 1880, he married May Withrow who was born 1890. They owned W.S. Knight Concrete in Shawnee, Ok according to a letter dated 1928, sent from William to his brother Dave in Texas.
Children of William and May were; Roy (born 1905), Lloyd (born 1912), Leon (born 1915) and Billy (born 1918).
William S. Knight was born in Cedartown, Polk Co., Ga.His parents were Felix G. Knight and Ruth Wilson. His brothers were; David Russell Knight, George Knight, Jim Knight, George Knight and his sister was Sally Knight. I am looking for any information on William Knight, his children, brothers or sister or his parents.
I will share the information I have.