The term Y Ogledd, the North, is taken to cover N. England and S. Scotland. The document BGG has a number of pedigrees unrelated to these areas. The obvious instance is the last one which includes Amlawdd Wledig. However, there are others like the one for Rhydderch Hael and Elffin and, therefore, I believe the term would have covered places like Gwynedd. It is claimed that the Welsh took stories from N. Britain and transferred them into Wales. This conjecture is incorrect as Y Gogledd would have included N. Wales.