How can we know that such wedlock would be lawful?

Nature and justice forbid the banns of such wedlock.'

There has been a mighty talking and arguing as to whether such wedlock as ours be lawful, and no man seems rightly to know.

I doubt myself whether such wedlock would be lawful; nor would I dare to call thee my wife did none but he tie the knot.

"Husband," said Lady Frances at last, "surely such wedlock is not lawful?"