Best of luck from the "Empire Irlandais". we founded our group on pretty much the same grounds. But we also believe that even if you don't get along with someone in the re-enactment you can still play with them. always remember there are plenty of people to talk to at an event. You don't need to talk to the ones you don't like.
Smile, be polite and talk to someone else.
Why should the hobby suffer due to personal differences? It suffers for so many other reasons as it is.