Four entries with the name Perilous Ford.
Perilous Ford
Gué Perellos
A treacherous ford in the land of Galloway that no knight dared to cross. Gawain reached it during his travels and tried to jump his horse across it. The horse jumped badly and dumped him into the river.
Source
Perceval, or Le Conte del Graal | Chrétien de Troyes, late 12th century
Perilous Ford
This seems to lie between Queen Igraine’s Canguin and Guiromelant’s Orquenseles, with an additional stretch of land on Igraine’s side.
The Haughty Maid of Logres maliciously dares Gawaine to jump his horse across the Perilous Ford, saying that her dear friend, the Haughty Knight of the Rock – whom Gawaine has just defeated – has been in the habit of crossing it every day for her sake. When, thanks to Gringolet, Gawaine makes it to the other side, Guriomelant informs him that he is the first knight ever to keep his life while crossing the ford.
This might be identical with the Perilous Ford mentioned above.
Perilous Ford
A ford defended by the knight Bleoberis.
Gawain’s son, Guinglain, defeated Bleoberis at the Perilous Ford and sent him to King Arthur.
Source
Le Bel Inconnu | Renaut de Bâgé, 1185–1190
Perilous Ford
A ford where Perceval defeated a knight named Urbain. Urbain, to honor his fairy lover, jousted with all knights who passed the ford.
Source
Didot-Perceval | c. 1220-1230