On both documents, the father of the child is given as Percy Bysshe Shelley. Shelley took financial responsibility for little Elena Adelaide even though she never lived with Percy and his wife Mary.
The birth certificate, retrieved from the Neapolitan archives in the 1930’s, is reproduced here. You can just make out the name "Elena Adelaide" at the bottom in this image with an elaborately drawn "E" and "A" and "d"
Ivan Roe, writing in 1955, said that “Godwin” has been misread as “Padurin,” “a slip resulting from unfamiliarity with the Italian script used in the certificate."
Yet subsequently, many biographers have reported that the name is given as “Marina (or Maria or Mary) Padurin.” Padurin is a Russian surname and no-one has suggested a Shelley connection to this name....