Summary of what we've found so far, if the one that Kevin and I have located is correct:
b.c 1833, Erbistock. Parents: possibly John and Mary (see 1861)
Garden Servant in 1851 HO107/2503/55/4
Marriage to Mary Ann Jones. Sept q, 1855
Gardener in Church Street, Ruabon in 1861 - RG9/4280/15/8. Children - John, 4, Edward, 1 (not sure about Edward - is he Robert's son of Thomas's

)
Also there is brother, Thomas 35* so the John and Mary as parents looks like it's correct

Railway Inn, Pontadam in 1871 RG10/5652/25/12 Children - John, Flora, Robert, Lily, Alfred
Pontadam in 1881 RG111/5512/28/3 - Lily becomes Elizabeth, I think
Daughter Flora marries Price Owen June 10 1878 at Rhosymedre. Father listed as Robert Pemberton, brewer.
Wife Mary Ann dies in 1887
Great Western Inn in 1891 RG12/4612/14/7 - a widower
Marries Rosina Wilson in 1892
Rosina dies 25 Dec 1899
Pontadam in 1901 RG13/5216/39/2
Robert dies Sept q, 1901.
gnu
Added - Hello Kevin - I did wonder where you'd got to
