Hi Bel,
You were right Ben had lots of siblings - think this lot is them
1. MARY PREES - International Genealogical Index
Gender: Female Christening: 30 AUG 1829 Stapleton, Shropshire, England
2. MARTHA PREES - International Genealogical Index
Gender: Female Christening: 04 AUG 1833 Stapleton, Shropshire, England
3. JOHN PREECE - International Genealogical Index
Gender: Male Christening: 17 SEP 1848 Stapleton, Shropshire, England
4. THOMAS PREACE - International Genealogical Index
Gender: Male Christening: 24 DEC 1837 Stapleton, Shropshire, England
5. BENJAMIN PREECE - International Genealogical Index
Gender: Male Christening: 13 SEP 1840 Stapleton, Shropshire, England
6. SARAH PREECE - International Genealogical Index
Gender: Female Christening: 28 AUG 1831 Stapleton, Shropshire, England
7. ROBERT PREESE - International Genealogical Index
Gender: Male Christening: 13 AUG 1843 Stapleton, Shropshire, England
8. JANE PREECE - International Genealogical Index
Gender: Female Christening: 08 NOV 1835 Stapleton, Shropshire, England
9. JANE PREECE - International Genealogical Index
Gender: Female Christening: 21 FEB 1836 Stapleton, Shropshire, England
10. RICHARD PREECE - International Genealogical Index
Gender: Male Christening: 14 SEP 1845 Stapleton, Shropshire, England
Batch Number: C008902
All had Benjanin and Sarah as parents - notice the different spelling of surname!
Think that might be enough details for you to get Ben's birth certificate from Shrewsbury Records - not GRO as its only a christening - but with other dates close by it must be after 1838(Thomas)
That will keep you going for now - will still try for other things!!
Cheers
Keith