linguistics in fantasy

“Since your book’s technological advances place it during the Renaissance, your characters are wrong because they should be speaking like Shakespeare.”

Imagine my surprise when a friend and avid fantasy reader said this to me. I can’t remember the last time I met someone who believed that level of linguistic authenticity necessary in a fantasy world. While I love Shakespeare, if every fantasy novel I read was written with historically and culturally accurate language, I’d go mad. I don’t speak German any more than I speak Old English. Egad! Not even the people of Shakespeare’s time spoke like Shakespeare.

Imagine if The Lord of the Rings trilogy were written like this:

When Mister Bilbo Baggins of Bag Endeth announc’d that he wouldst shortly be
celebrating his eleventy-first birthday with a party of special
magnificence, thither was much talketh and excitement in Hobbiton.

Or like this:

Hwanne Dryhten Bilbo Baggins of Faetels Ende abeodan se he dulmúnus aer gebréfan beon he endleofan-fyrest ongean a gebéorscipe fram déore, þider beon fela acwepan end onwæcenness in Hobbiton.

Not so bad in Shakespeare’s tongue, but how enjoyable would the reading be in Old English?