The IGI is up and running again so:
TWYFORD PRs (extracted)
HANNAH LAMBOURNE
Christening: 24 JUL 1814 Twyford, Buckingham, England
Parents:
Father: JOHN LAMBOURNE Family
Mother: ELIZABETH
There is also an Ann in 1817 (Hannahs are quite often Anns).
Loads of Lambourns No Thorpes.