My Davis family are of Oxford. I am still persuing them.
William Davis, a boat builder (according to his daughter's marriage certificate), married Fanny Petty in December Quarter, 1851, in Oxford. Fanny Petty was of Abingdon (Sue has found them for me and they were of the Trinity Church, Abingdon). Actually, Fanny Petty married aged 36 and is noted on two censuses, as being deaf.
I have yet to find this William Davis on a census. He was dead by 1871 but he should be on the 1861 and 1851 censuses. He maybe of Oxford, he maybe of elsewhere.
Re: Souch -- alas, no, I am not related to any Souch/Zouches but I have interests in Chertsey, Surrey and have microfiche for that parish and I have noticed Souch's there before. I have also got a knowlege of many ancient families and I have read that Souch is a derivative of Zouch(e).