Web Reference: William Joseph Cowsill Jr. (January 9, 1948 – February 18, 2006) was an American singer, musician, songwriter, and record producer. He was the lead singer and guitarist of The Cowsills, who had three top-10 singles in the late 1960s. William "Bud" Joseph Cowsill, Sr. was born December 2, 1925 in Providence, Rhode Island and died of leukemia on September 29, 1992 in a plane on route to treatment. Known as "Bud" to his friends, Cowsill retired from a long career in the US Navy to manage his family in the 1960's bubble gum rock group "The Cowsills".
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