I have been trying to solve a few of the queries on Pierce Jones. I found a tree on Ancestry which has details of his birth certificate entries. The transcript reads that he was born 3 November 1850, abode: Tan Wal Eglwys Rhos, father's name was John Jones, occupation labourer, mother's name was Elizabeth Jones, formerly Williams. Abode at time of birth was Tan Wal.
There is also a copy of the marriage certificate as follows: 1 October 1874, Sion Chapel, Conwy. Pierce Jones, Bachelor, Plasterer, age 23, of Ochre y Penrhyn, Eglwys Rhos, father John Jones, Labourer. Jane Anne Williams, Spinster, age 24, Domestic Servant, of Mostyn Crescent, Llandudno, father John Williams, occupation Labourer. Witnesses were: William Jones and Mary McManus. Both Pierce Jones and Jane Williams made their mark on the certificate.
Pierce's death certificate is also shown and this reads: Pierce Jones age 71, cause of death (1) Bronchial Plasterer; (2) Pneumonia. Present at death: John Jones of 25 King's Road, Llandudno. This is as shown but the entry looks strange in view of the first cause of death given.
Pierce had a brother, William Jones born c1853. He is with John Jones and family on the 1861 census and this shows he was born Eglwys Rhos. The family are living at Tan y Wal. William Jones is living as a Lodger with Pierce Jones and family in the 1881 census. He is shown as a Tailor by occupation. They are living at "Cottage back of Parade Hotel".
I don't think Pierce married twice and cannot find any evidence for this. I suspect that someone may have an incorrect tree on Ancestry as this is the only source which shows he married twice.
Helig.