Before the
Norman Conquest Combe was held by
Leofwine Godwinson. Abbas Combe was recorded in the
Domesday Book of 1086–87 as
Cumbe, when it was held by the church of St Edward,
Shaftesbury. The other manor within the parish was held by Godwinson, but after the Norman Conquest, was given to Bishop
Odo of Bayeux. It was his descendant Serlo FitzOdo who granted it to the
Knights Templar. The parish was part of the
Hundred of Horethorne. Templecombe derives its name from
Combe Templariorum, after the Knights Templar who established
Templecombe Preceptory in the village in 1185. After they were suppressed in 1312 it was granted to the
Knights Hospitaller who held it until the
dissolution of the monasteries, The
manor house in the high street was built in the 17th century on the site of a medieval building.
Richard Boyle, 1st Earl of Cork, bought Temple Coombe Manor in 1637 for £20,000. The Earl already owned Stalbridge Manor in
Dorset, close by. Boyle also purchased Annery House near
Bideford in 1640 for £5000.
Somerset by G.W. Wade and J.H. Wade () states, "Templecombe (or Abbas Combe), an inconsiderable village at the S.E. extremity of the county, with an important station on the S. & D. and L. & S.W. lines. The church is ancient but uninteresting, and seems to have been considerably altered. It contains a curious
E.E. font. The tower is somewhat peculiar, and forms the S. porch. On the rising ground at the S. of the village are the remains of a
preceptory of the Knights Templars, founded in the 12th century by Serlo Fitz-Odo. From this foundation the place takes its name. A long building, which was perhaps once the refectory, but which is now used as a barn, will be noticed abutting on a farm-house along the road to
Milborne Port. In an orchard at the back of the farm are the ruins of a small chapel." It was found by
Time Team that the long building post-dated the preceptory, having timbers dated to ; but that the chapel, since demolished, and with only footings remaining, was authentically Templar. Lady
Theodora Guest funded the building of Templecombe's "Merthyr Guest
Cottage hospital" which opened in 1906. It had over 100 in-patients in 1947, when it became an NHS maternity hospital, and operated until 1974. ==Governance==