Tell the Howells hi.
Honestly, I don't know why you even try that canard seeing as (a) Luther is not and never was the "Pope" of Protestantism and (b) Luther never demanded anyone accept his Bible version. Luircin is correct that it wasn't until Trent that the Roman Catholic church dogmatically defined the canon to include the seven extra-biblical books. Up until then, even Catholics disagreed on the contents. You want facts for that, too? Will you read them?