Burnup Surname

Hello Everyone!  I am new today to this website.  I am looking for anyone out there researching the surname Burnup.  I have many relatives that were in Ontario, Canada  and upstate New York that have been traced back to London, England in late 1780's.  I am at a roadblock here and feel that only through others may I go back any further in  y family history.  Great project for the cold gloomy winter months here in Michigan!