Hello all, I am a scholar at Cardiff University specializing in Yoruba music and just googled Evan Celyn Rowlands for an article I am writing. Indeed he wrote Teach Yourself Yoruba and was a serious linguist, though I don't know anything about him and was intrigued to learn that he was Welsh. The person that may know something about Rowland's education and life (or may be able to refer on) is my old Yoruba teacher, linguist Akin Oyetade at SOAS, London. I will drop him an email and let you know if I find any detail. Amanda