Hi Mothball,
This is the 'timeline' for Sidney Webb.
WEBB Sidney Commercial Row, Pembroke Dock 1868, 1871
WEBB Sidney Dimond St, Pembroke Dock 1875, 1880
WEBB Sidney Laws St, Pembroke Dock 1884.
I think he was active for many years as I've four different styles of his cards.
The advertising motives were in red, green, blue then black with the Prince of Wales feathers.
Sam John Allen one of Charles Smith Allen's sons was in Pembroke as well as our Sid and the Trindall family. The docks produced a fair amount of photographic trade.
ALLEN Samuel J. 26 Bush St, Pembroke Dock 1891, 1895, 1901 S.J. 1891 + 1895
ALLEN S.J. Creswell Buildings, Bush St,Pembroke Dock 1906, 1910
ALLEN Samuel J. Picton Place, Haverfordwest 1891, 1895, 1901, 1906
ALLEN S.J. Picton Place 1901 and 1906
ALLEN Samuel J. Cartlett, Haverfordwest 1910, 1914, 1920
I think that when photographers took over existing businesses they used the printed cards from the previous owner for a short while. This does cause some confusion.
Regards
Llanfallteg