First recorded by Tommy Roe & The Satins (1960).
Hit version by Tommy Roe (US #1/UK #3/CAN #1/AUS #1 1962).
From the wiki: “‘Sheila’ was written and recorded by Tommy Roe (‘Dizzy’, 1969) with the help of Robert Bosch. Roe originally conceived the song in 1960 as ‘Frita’, based on a girl from Roe’s high school. Roe auditioned the song for Bosch, a record producer from Judd Records, and while hid response was enthusiastic, Bosch suggested that the name be changed. By coincidence, Roe’s Aunt Sheila was visiting, which inspired the final title of ‘Sheila’. The original version of ‘Sheila’ was recorded by Roe with his then-backing group, The Satins, and a female vocal group, the Flamingos. Released by Judd Records, it had no chart impact.