2nd Baron's war heraldry question

[pineapplegeneral]

Hi,

I am trying to find heraldry for anyone that was in Bristol or Wallingford during the 1264-7 2nd Barons war, looking to paint up forces for the various attacks on both places. I have found a few names that I can't find heraldry for, it may be that they didn't have any, but if anyone knows otherwise.. The names are: Gilbert of Elsfield (which I found on one place but they look like Hugh De La Spencer's, so I think it's wrong), Baldwin de Cuserigg (Curridge or Cuserig, Cuserug or Cuserugg) and Matthew of Chieveley, who were both at Wallingford at some point.

I get a bit carried away in the details.. thanks.