In Oxford what name is derived from the quadrifurcus?

Answers to this Rose and Crown webpage please. 

To the winner, a pint of bitter or a glass of house wine and a dish of Debbie’s home made Faggotts and mash or a roast Sunday lunch to the 1st name drawn from the pot on the final day of the competition, Sunday, 17th inst.


Ref: “Oxford Rogues. Their City. Their Lives” by Rob Walters (ISBN 978-0-9512388-3-7)
: Nostalgic Oxford and Surrounding Area.