As the sentence states above in Hyde Cemetery, 'ALSO SAMUEL S[COTT], THEIR SON, DIED IN AUSTRALIA, SEP. 17TH. 1951, AGED 86 YEARS.' Middleton says that Sudlow hadn't published much, although he prints his 'To the Blue Bell' in full and says that it will 'take a high place in local verse'. At the time that Middleton published his book Samuel Scott Sudlow was about 43 and had yet to leave the UK for Australia, although he appears to have published nothing at all there. But he was obviously a little more successful in another field.
Samuel Scott Sudlow was a joiner by trade, although Middleton speaks more of Sudlow's artistic education and of his local fame as a portrait and landscape artist. He says '[h]is work is highly spoken of by those competent to judge, and he is one of the few local men who have been successful as a portrait painter'.
And interestingly, a little Googling tells me that 'S Scott Sudlow' was several times one of the finalists for painting prizes in Australia, including one called Self Portrait, but – frustratingly – I can't find any of his paintings online.