John Edward G Gidley born 1903

I have recently obtained the birth certificate of John Edward G Gidley, born in Kennington, London, in November 1903. I had hoped this was going to solve the mystery of the parents of Edward George Gidley, of a similar age and district of London. But they are totally different people. The certificate did, however, solve the mystery of the two Gidleys I found in Dover in both the 1911 census and in death references.
John Edward Gidley born 14 November 1903 in Kennington was the son of Evelyn Louise Hatton Greenaway, a milliner. The certificate has been officially altered by the registrar to change baby John's surname from Greenaway to Gidley, when presumably John's father went to the Register Office to facilitate this. The father was John Edward Gidley, a joiner. I think this makes him part of the Gidleys of Winkleigh tree, and John Edward senior was born in 1859 in Mile End, London, the son of Gustavus Gidley of the Metropolitan Police. John Edward married Maria in 1879. They had five children, and Maria died in 1900. John married again, in 1901, to Eliza, and was presumably still married to her when he admitted the parentage of John Edward junior. In fact Eliza did not die until 1933, by which time John senior had married yet another woman, three years before he died in the Renfrew Road Workhouse in Southwark in 1926.
Evelyn (who was born in Kent) and John junior were found in Dover in the 1911 census, both using the name of Gidley. John died in 1932 in Dover, aged only 28. Evelyn had died in Dover in 1928 under the name of Gidley, and is described in the probate record as a widow.