Looking for the birth record of michael mcmann born in December 1858 in Norfolk Co. Canada. Were do I find these records since Canada did not keep birth records before 1869?

It was not required for births, marriages and deaths to be registered prior to 1869 - it does not mean they weren't kept. Vital registrations were not the primary source of a birth record - they were copies of birth records sent to the government. Usually it was a parish record (church record) that first recorded a birth, marriage or death. If you can't find a vital statistics registration, try church records.

I would like information on the history and the location of the Buckley bank . my father as a young boy recalls visiting this bank on numberious occasions . It is believed that the bank was within the area that is now regional municipality of haldimand - norfolk

For this bank I would try the Regional reference room at the University of Western Ontario (located in London, Ontario); I would use city directories of the period to find its exact location at the time and then go after the prior land acquisition. Additionally, the Canadian Bankers Association (or its equivalent) might shed some light on this one.