Williamson to ride Colonel Braxton Norman Williamson is set to partner SunAlliance Chase hope Colonel Braxton for the first time at Naas on Sunday, with a view to partnering the gelding at Cheltenham.Dessie Hughes` seven-year-old, a faller on his chase debut, has not been seen out since finishing second to Give Over at Leopardstown over Christmas.Colonel Braxton was one of the leading novice hurdlers of last season and Williamson had been in line to ride him at last year`s Cheltenham Festival before it was called off due to foot-and-mouth.