Randolph Keitch was a Quidditch player for the Falmouth Falcons. In 1929, he established the Comet Trading Company with fellow player Basil Horton. Together they also created the Horton-Keitch Braking Charm.
From the Germanic elements rand meaning "rim (of a shield)" and wulf meaning "wolf". The Normans brought this name to England, where there existed already an Old Norse cognate Randúlfr, which had been introduced by Scandinavian settlers. Randolf became rare after the Middle Ages, though it was revived in the 18th century (usually in the spelling Randolph).