Who wrote the funeral dirge?

There are a few famous funeral dirges. "Funeral March" by Chopin is the one commonly heard on Cartoons. A number of funeral marches are heard in Purcell's "Funeral Music for Queen Mary." Handel's "Dead March" is also used a lot at funerals. Thomas Attwood wrote a march titled "Dirge" for Admiral Nelson's funeral.

I hope one of these is the one you're looking for. You can hear samples of all of these at Amazon, CD Universe, etc.