When Leonard Edgar Bonner was born in May 1899, in Jones, Mississippi, United States, his father, Jeffferson Davis Bonner, was 31 and his mother, Mary Louella Gatlin, was 32. He lived in Greenwood, Leflore, Mississippi, United States in 1935 and Beat 3, Washington, Mississippi, United States in 1940. He died on 12 November 1974, at the age of 75, and was buried in Greenlawn Memorial Gardens, Greenville, Washington, Mississippi, United States.
English: from Middle English boner(e), bonour ‘gentle, courteous’ (Old French bonnaire, shortened from debonnaire). This surname is also common in Ireland where it was adopted for Ó Cnáimhsighe, see Bonar 2.
Welsh: Anglicized form of Welsh ap Ynyr ‘son of Ynyr’, a common medieval personal name derived from Latin Honorius with fused patronymic marker (a)p, normally voiced before a vowel.
German (also Bönner): from a short form of the ancient Germanic personal name Bonhard, formed with the element bon ‘request, petition’ (compare Latin bonus). This surname is also found in Sweden.