Hi - I am having a look at this for you in the parish records..
these are the births for Richard the father ; there are none for Yorkshire as these were found on a Uk search...
TEASDALE Richard 1678 Little Stanmore Middlesex
TEASDALE Richard 1719 Ebchester Durham
TEASDALE Richard 1720 Haydon Bridge Northumberland
on the other hand in the parish records for Yorkshire Teasdales are these births..
TEASDALE Thos 1757 Pontefract Yorkshire (West Riding)
TEASDALE Thos 1757 Pontefract Yorkshire (West Riding)
TEASDALE Thomas 1773 North Otterington Yorkshire
TEASDALE Thomas 1813 Startforth Yorkshire 10 credits
TEASDALE Thomas1852 Stanley Yorkshire (West Riding)
TEASDALE Thomas 1876 Outwood Yorkshire (West Riding)
these are the 1804 deaths
Robert Teasdale Birks. 25 September 1804 at Whitley Chapel
Robert Teasdale Whitley St Helen Northumberland 25 Set 1804 Anglican religion