4 -- 7 ) agrees well with other accounts where his home is explicitly in england does no more than show that the story remained while the geography altered -- just as the 'black coasts ' of his home survived in later writing to become the western coasts of britain , whereas the earliest reference to them is the etymology of angol 'iron cliffs ' ( his own name , = eriol , from the land 'between the seas ' , angeln in the danish peninsula , whence he came : see i .