There does not appear to be any other marriages in Pembroke or surrounding counties for Barberry or varient pre 1837
1851 - HO107 Piece 2476 Folio 533 Page 38 all in Pembroke, has John Barbery b c1816 Plymouth Devon
Possibles for baptism Batch Number: C099131
www.familysearch.org with a number of siblings, parents William & Mary, at Morice Square Baptist, Devonport, Devon, England
JOHN BARBERRY - Birth: 07 NOV 1816
WILLIAM BARBERRY - Birth: 18 DEC 1818
THOMAS HOOD BARBERRY - Birth: 06 MAR 1821
JAMES BARBERRY - Birth: 04 MAR 1828
ARCHIBALD NATHANAEL BARBERRY - Birth: 27 JAN 1826
SAMUEL CHAMBERS BARBERRY - Birth: 10 AUG 1823
Also Deaths Sep 1840 BARBERRY Samuel Chambers Pembroke 26 423
Some very good links, including directories and Hugh Wallis, the Stoke Damerel OPC, provides a search facility on his index of Baptisms, 1801-1814 and Burials 1813-1819 and 1823-1825.
http://genuki.cs.ncl.ac.uk/DEV/StokeDamerel/1861 RG9 Piece 2651 Folio 163 Page 29
Liverpool
Transcribed as Borbenbey, has Frances as widow, all b Pembroke
Possible Death Sep 1857 Barberry John Liverpool 8b 241
Cas