Clifton College, one of the city's leading public schools, was used as the headquarters of the US 1st Army
also see
http://www.fishponds.freeuk.com/ http://www.fishponds.freeuk.com/memmain.htm
for luftwaffe attacks on Bristol and the effects.
and
http://www.bbc.co.uk/dna/ww2/A1061759
for a little on Bristol in WW2
hopethis helps