16 the summer assize was transferred to Bodmin. Since
1836 both assizes have been held at Bodmin. The jurisdiction of the
hundred courts became early attached to various manors, and their
bailiwicks and bedellaries descended with the real estate of their
owners. There is much obscurity concerning the early ecclesiastical
organization. It is certain, however, that Cornwall had its own bishops
from the middle of the 9th century until the year 1018, when the see was
removed to Crediton. During the interval the see had been placed
sometimes at Bodmin and sometimes at St Germans. In 1049 the see of the
united dioceses of Devon and Cornwall was fixed at Exeter. Cornwall was
formed into an archdeaconry soon after, and, as such, continued until
1876, when it was reconstituted a diocese with its see at Truro. The
parishes of St Giles-on-the-Heath, North Petherwin and Wellington,
wholly in Devon, and Boyton, partly in Devon and partly in Cornwall,
which were portions of the ancient archdeaconry, and also the parishes
of Broadwoodwidger and Virginstowe, both in Devon, which had been added
to it in 1875, thus came to be included in the Truro diocese. The
present archdeaconries of Bodmin embracing the eastern, and of Cornwall
embracing the western portion of the newly constituted diocese were
formed, by order in council, in 1878. Aethelstan's enactment had
doubtless roughly determined the civil boundary of the Celtic-speaking
county. In 1386 disputes having arisen, a commission was appointed to
determine the Cornish border between North Tamerton and Hornacot.

For the first four centuries after the Norman conquest the part played
by Cornwall in England's political history was comparatively
unimportant. In her final attempt in 1471 to restore the fortunes of the
house of Lancaster, Queen Margaret received the active support of the
Cornish, who, under Sir Hugh Courtenay and Sir John Arundell,
accompanied her to the fatal field of Tewkesbury, and in 1473 John de
Vere, earl of Oxford, held St Michael's Mount in her behalf until the
following February, when he surrendered to John Fortescue. A rising of
considerable magnitude in 1497 at the instigation of Thomas Flamank,
occasioned by the levy of a tax for the Scottish war, was only repelled
after the arrival of the insurgents at Blackheath in Kent. Perkin
Warbeck, who landed at Whitsand Bay in the parish of Sennen, obtained
general support in the same year. The imposition of the Book of C