“Onward Arthur paced, with hand
On Caliburn's resistless brand.”
Scott: Bridal of Triermain.

I remember reading that when Lancelot finally threw King Arthur's sword into
the lake, a hand rose out of the water, caught it, and "brandished" it,
then disappeard with it below the water.
I wonder if "brand" for sword is etymological source of "brandish".