Wikipedia says "After the German spelling reform of 1901, in almost all German terms, the letter y was changed to the letter i, but some proper nouns have kept their y, including Loreley".
Lorelei is seemingly the standard spelling in English, French, and more, according to the wikipedia entry of Lorelei in these languages. Lorelei should have been the standard spelling in these languages before 1901 - it would be implausible if Loreley became Lorelei in these languages because of the German spelling reform.
Was the -ei in Lorelei influenced by the -ei placenames like Lombardei?
Was Lombardei spelt Lombardey before the German spelling reform?
Lorelei is seemingly the standard spelling in English, French, and more, according to the wikipedia entry of Lorelei in these languages. Lorelei should have been the standard spelling in these languages before 1901 - it would be implausible if Loreley became Lorelei in these languages because of the German spelling reform.
Was the -ei in Lorelei influenced by the -ei placenames like Lombardei?
Was Lombardei spelt Lombardey before the German spelling reform?