Iona Margaret Balfour Opie (13 Here 192323 Here 2017) ha Peter Mason Opie (25 Du 19185 C'hwevrer 1982) a oa ur c'houblad gwerinonourien saoz.

Oberennoù

kemmañ
  • I Saw Esau: Traditional Rhymes of Youth (1947)
  • The Oxford Dictionary of Nursery Rhymes (Oxford University Press, 1951, 2nd edn., 1997), p. 357.
  • The Oxford Nursery Rhyme Book (1955)
  • Children's Games in Street and Playground (1969)