I have been away for a few days so could not respond earlier. I am co-ordinating the Bolton Marriages submissions to Lancs BMD and I can state that we have no Zipporah Lee married between 1816 and 1834. Though we do have a Rogerson, a Maycroft, a Yates and a Chadwick. Up to 1895 has been submitted to the Lancs BMD site, thereafter is subject to revision of errors and omissions prior to submission, so all hope is not lost.. -- Graham