I am unable to answer PM’s on Ancestry (Rootweb), until I can get some assistance in solving this problem I can only post/answer through the Forum.

The only Benjamin Nicholas that I can establish is that of Benjamin baptised 04 Feb 1827 the son of John & Theodosia Nicholas nee’ John.
John Nicholas mrd Theodocia John at Bletherston 30 Apr 1816.

I have found a reference to a ‘Dan’ Nicholas, a Mariner of Whitchurch (do not confuse with Whitechurch) who mrd a Lettice Grffith at Mathry 12 Sept 1824, but have not found a possible son Benjamin which would appear to fit.

Rgds
Orielbenfro