The altar in the north transept is modern and was originally dedicated to All Saints but it is now generally known by the name of St Symphorian from the window behind it.
Symphorian, contrary to tradition, is portrayed as a bishop, and his supposed connection with this area seems to be a mistake made by John Leland in writing about the churches of Forrabury and Tintagel.
The north window commemorates John Douglas Cook, editor of the Saturday Review, who is buried in the churchyard nearby.

The south transept is somewhat longer than the north and may have been lengthened to contain a tomb.
A stone bench runs round part of the walls from the time when no other seating was provided in churches.
The Roman inscribed stone is of the early 4th century and was found built into the western gateway of the churchyard in 1889.
The memorial brass is for Joan (d. 1430s?),
mother of John Kelly who was vicar here 1407-1427 and afterwards dean of Crantock.
Originally placed under the altar, it was moved to the end of the transept in 1871.
The altar in the north transept is modern and was originally dedicated to All Saints but it is now generally known by the name of St Symphorian from the window behind it. Symphorian, contrary to tradition, is portrayed as a bishop, and his supposed connection with this area seems to be a mistake made by John Leland in writing about the churches of Forrabury and Tintagel. The north window commemorates John Douglas Cook, editor of the Saturday Review, who is buried in the churchyard nearby.
The south transept is somewhat longer than the north and may have been lengthened to contain a tomb. A stone bench runs round part of the walls from the time when no other seating was provided in churches. The Roman inscribed stone is of the early 4th century and was found built into the western gateway of the churchyard in 1889. The memorial brass is for Joan (d. 1430s?), mother of John Kelly who was vicar here 1407-1427 and afterwards dean of Crantock. Originally placed under the altar, it was moved to the end of the transept in 1871.
St Materiana's Church, Tintagel