brigidmac, thank you for that insight, I believe that just because these things happened in the past, still does not make them not important .
heywood. the time of birth was not on both birth certs, because the Father filled them in , He was the Father, He was the only one visiting Her at her isolated home , after He had certified the death of Her partner .a few months earlier. There was a lot of money in the home and other things, it really is a very long sad story, He never lived with Her as such , He carried on living at His parents home , He would "stay over " up until the day He arranged transport to the asylum .
The picture of the twin and His Father shows , no mistake who the Daddy was

This picture was taken after His Father took Him for a day out from the boarding school He had put Him in, a bit later in the day, He told the boy " your Mother has died ". she had only just been put in the Asylum, jumping the gun a bit ! .