Hi Mothball,
Thanks for the interest and information about the Trindalls.
This is the 'timeline' for the Trindalls that I've found so far.
TRINDALL Richard St Thomas' Green, Haverfordwest 1868
TRINDALL Rchard. Bridge St, Haverfordwest 1871
TRINDALL William 37 Dimond St, Pembroke Dock 1868
TRINDALL W. Dimond St, Pembroke Dock 1871, 1875 Diamond St in 1871
TRINDALL Mrs Sarah Ann 37 Dimond St, Pembroke Dock 1880
MIDDLETON & TRINDALL Dimond St, Pembroke Dock 1884
MIDDLETON Mrs S.A. 37 Dimond St, Pembroke Dock 1891
TRINDALL & Co. 37 Dimond St, Pembroke Dock 1895, 1901, 1910
TRINDALL Hugh Frederick 37 Dimond St, Pembroke Dock 1906
These dates mostly came from trade directories.
I have a small collection of carte-de-visite photographs by Pembrokeshire photographers.
I'm interested in the backs of the cards, although the front can give some idea of the date.
Regards
Llanfallteg.