The only mention I could find of a "W. F. Bettis" was of a gentleman living in Whitefield, Illinois circa 1878. He apparently owned a store at Whitefield Corners. See source in links.
Angela Bettis's birth name is Angela Marie Bettis.
Tom Bettis's birth name is William Thomas Bettis.
Jerome Bettis's birth name is Jerome Abram Bettis.
Bettis Garside died in 1989.
Bettis Garside was born in 1894.
Zechariah Bettis was born in 1816.
Zechariah Bettis died in 1879.
John Bettis was born in 1946.
Angela Bettis is 5' 4".
Hilary Bettis is 5' 1".
Tom Bettis is 6' 2".
Bettis Richardson is 5' 9".