William Dawkins, baptised Pwllcrochan in 1822 is the son of John and Lucy Dawkins of Popton village.
I can't find a marriage for them but there are other children baptised to them in Pwllcrochan, Monkton, Pembroke St Mary, and St Petrox. John dies before the 1841 census, but Lucy lives until 1869. Buried in Monkton aged 90. She is in the 1841, 1851 and 1861 census living with various of her children in Monkton. A daughter Lettice, born c1809, is in a public family tree on Anc... Lucy's maiden name is given there as Macken.
A search for Lucy Dawkins born c1779 in Pembrokeshire will find her.
Regards,
Rhosgoch