Sorry to hear that these two are no longer going to be performing together. I met them when I worked in Doncaster in the late 80's and went to the folk club that Allan and John ran - I think it was the Three Horseshoes pub. I as asked to become part of a group they were in - Swiftnick - and we did a few gigs during my time in Donny including the Doncaster folk festival - go down THIS page for a not very flattering photo!
After twelve months or so work caught up with me and I had to move on but I had a very enjoyable time with Allan, John and Alan Nicol as well as everyone else in the club whose names sadly escape me now.
Why Buffalo Brothers? I sing a song called "Joseph Cross" by Eric Taylor about a North American Indian - one line of the chorus goes "He's killed for hunger his buffalo brother". Allan loved the song when the song when I sang it at the club and that line obviously caught his attention.
Have fun at the gig lads

Cheers
Mark