G'day Joe,I just dug out Martyn's CD Beneath a Southern Sky and had a listen to his version. The tune is clearly a different one and a quite pleasant setting of the song ... I still prefer Chris Kempser's tune, but that was the first tune I heard and that always sets a bias.
I also like the fact that it is a "strong" tune and I think that is more in tune with your mother than some other tunes I hear today!
Regards,
Bob Bolton