Okay, now this has well and truly confused me:
Maria
was his mother, which makes him legitimate -- why was he born in Egham? Was she not supposed to be in Woking Asylum at this time? Why has he not been counted alongside his siblings on Henry's 1911 census record? (total children born alive 5, still living 4, dead 1)
Can Edwin's date of birth provide any clues? I had assumed the answers to these questions would revolve around the fact he was a bastard and was perhaps living with his mother, but him being Maria's daughter actually seems to have provided more questions than answers!
Any ideas?