She's gorgeous!
I just checked, and apparantly she's married to Gerald Scarfe--the guy who did the animation for Pink Floyd's "The Wall".
Martha My Dear is definitely about her. You can just tell from the lyrics.
Martha was a very attractive dog, didn't kiss and tell, and didn't mind other pets.
It's about his dog, who was called Martha!!
One would think that there's still contact between Paul and Jane. How else did Mary McCartney and Jane's husband Gerald Scarfe meet?