Birth or Baptism Look Up Help Please

[Loves Labours]

Hello all,
Help needed please in trying to trace a birth date or baptism for James Harris.
According to the 1901 census, by that time he was living in Yorkshire, his age is recorded as 30, born 1871 in Dowlais.
Having trouble tracking him\his family down in Dowlais and any help would be much appreciated.
Thank you.

[groom]

Dowlais is in the borough of  Merthyr Tydfil, there is this possible birth

Births Sep 1870   
Harris    James Henry       
Merthyr T    11a   351

However there are also 2 more in March and September 1872.

[groom]

Possible for that family in 1881
RG11; Piece: 5365; Folio: 34; Page: 26
Llansamlet Higher  Glamorgan

William Harris   37  coal miner             St Davids, Pembrokeshire
Mary Harris   39                              Llandovery, Carmarthenshire
Ann Harris           17                              Merthyr Tydfil
James Harris   11                              Merthyr Tydfil
Elizabeth Harris    5                               Merthyr Tydfil
William Harris    2                               Llansamlet, Glamorgan
Mary Jane Harris    11 mths                     Llansamlet, Glamorgan
James Morris   45 lodger                     Pembrokeshire

[Loves Labours]

Thank you so much Groom for that info.  I will follow up these possible leads.
Kind regards