Robert
I was in Haddington this afternoon and recorded the inscription for you:
Erected
in memory of John Punton who died Sept 4th 1890
aged 52 years.
Marion Hamilton his wife
who died 28th Jany 1925, aged 81 years.
Agnes Amos wife of William Punton
died 10th March 1893 aged 25 years.
Elizabeth
daughter of the above John Punton
born 22nd Jany 1878, died 18th Jany 1918.
Also his son Thomas
died 5th Jany 1925 aged 38 years.
Isabella Wyllie
wife of George Punton
died 5th Jany 1946, aged 80 years.
and the above
George Punton
died 20th July 1951, aged 87 years.
As you'll note, the surname is Punton, rather than Ponton. On the churchyard index on St Mary's website, you'll see that the churchyard contains other Punton graves too.
I have taken a couple of photographs of the headstone. If you send me a Personal Message with your e-mail address, I would be happy to forward the photos to you.
Regards
David