My father and his twin, Arthur and Alan were born 1942 in Aberdeen, father Arthur Gibbons but not on birth certificate and not married to their mother, Isabella. I am guessing he was around 18-20 as she was 17 at the time. I wonder if you have any ideas how to search, he is not on any birth census in Scotlands people, could have been married in 1946 *not sure, there is an Arthur listed in Aberdeen but unsure if him. He could have been born in Jersey.
Many thanks
