Hunlicahors

Hi everyone. I entered Thailand on a non O visa based on marriage. Normally the 90 days granted is long enough at which time I return to the UK. Unfortunately I need to stay a month longer,I do not qualify for a year extension and was hoping someone could tell me if 30 day extensions are granted on non O Visa's. I am in Udon Thani and am due to leave on the 16th of February but would like to stay until mid March. Thanks for any help.