"England & Wales Non-conformist births and baptisms", database with images, Findmypast.co.uk(http://findmypast.co.uk : accessed 7 February 2018), entry for Mary Dix baptism date 29 July 1799 at Cradley, Park Lane Chapel (Presbyterian); citing The National Archives RG/4/2015

Text from source:

289. Mary daughter of Joseph and Ruth Dix of the Park Side Cradley in the Parish of Halesowen and County of Worcester baptised July 29th 1799 by the Revd Noah Hill of London