I am fascinated by this thread as I have done quite a bit of research on the Laugharne family of Dinas and Newport, Pembrokeshire, some of whom were my maternal ancestors.
It seems to me that a bit of confusion is creeping in here because there were 3 William Laugharnes born in the North Pembs area within a few years of each other. You say in your original posting that your William Laugharne was born in Fishguard in 1819. There is indeed a William Laugharne who was a mariner who was born in Fishguard around that time. You can check out more details of his career at sea on
http://www.welshmariners.org.uk.
Now the William Laugharne, corn merchant, at 39 Underhill St, Swansea on the 1881 Census was, I'm fairly certain, the son of Thomas and Mary Laugharne from Bwlchmawr in Dinas. My reason for thinking this is because in 1884 that there is an entry in the wills index at the PRO to the effect "Personal estate of Mary Laugharne, wife of Thomas Laugharne, late of Bwlchmawr in the Parish of Dinas Pambs who died 16th November 1866 at Bwlchmawr was proved at Carmarthen by William Laugharne of 39, Charlton Terrace Swansea, Gla, corn merchant the son the surviving executor. Probate being granted under certain limitations". Why he was so late presenting this will is another story..... I have never been able to find a baptism record for him, so I would be interested to know if anyone else has.
There's a third William Laugharne, also a mariner, who was born in Newport in 1819. He was baptised at Ebenezer chapel in Newport and was the son of John and Eleanor Laugharne of Pant in Neport. He is also listed on
http://www.welshmariners.org.uk. He married an Eleanor Griffiths in Newport on 28th Nov 1845 and I have baptisms for two of his sons in Newport and a lot more information about the Pant branch of the family, if you do find this is the right one.
I think this all needs a lot more unpicking. Why did all these people insist on having the same names
. I'm wondering if the shipmaster Laugharne, living at no 40 Underhill St was the one that you want and that Alfred and Evangeline were being put up next door for some reason. After all it says "visitor" rather than daughter by Evangeline's name.... just a thought.
I'm copying this to the Swansea list as I see that some of the thread is on there as well.
Good luck
Vivien