I am seeking the birth of William Robertson, father John Robertson, mother Margaret Maven between 1864 and 1868 born in Durham. I purchased a birth certificate registered South Shields for the 1st Qtr 1864 but it did not prove to be correct. The family moved around a little and was in Berwick then Jarrow then Sunderland. I am presuming these are close by. Are they all separate registration districts? Lorraine Knott