The 13th-century parish church, dedicated to St Wenna, is situated in a secluded location at in Morval hamlet. It was probably built in the 13th century with transepts and a north aisle added in the 15th century. The west tower is built of slate. A monument survives to Walter Coode and his family. Two early pieces of communion plate survive comprising a paten of 1528–29, plain in design and the only pre-Reformation plate in Cornwall, and a chalice of circa 1576. The church contains the oldest known sundial in Cornwall, dating back to 1671, and is one of only three 17th-century dials in Cornish churches. The dial is in a poor condition and a motto on the dial reads Ut Ora sic Vita.
Manor
A hundred metres south of the church is Morval House, the manor house, a large Tudor residence which was once the home of the Glynn, Buller and Kitson families. The house was altered in the 18th century and according to Nikolaus Pevsner is "one of the best in Cornwall". The descent of the manor of Morval was as follows:
Coode
The estate was the property of John Coode, whose daughter and sole heiress Anne Coode married John Buller, MP, of Shillingham near Saltash, in Cornwall.
Buller
The ancient family of Buller is descended from Ralph Buller of Word in Somerset, sixth in descent from whom was Richard Buller who settled in Cornwall and married the heiress of Tregarrick. They derived much of their political power from their kinship to the Trelawny family of Trelawny in the parish of Pelynt, Cornwall, who controlled the pocket borough of nearby East Looe.
John Buller, MP, of Shillingham near Saltash, in Cornwall. His son, who predeceased him, was John Buller, MP for Lostwithiel in 1701.
James Buller , MP for East Looe 1741–47 and for Cornwall 1748–65. His first wife Elizabeth Gould was the heiress of the estate of Downes near Crediton in Devon, which became the principal seat of the senior line of the Buller family. He married Secondly in 1744 to Lady Jane Bathurst, second daughter of Allen Bathurst, 1st Earl Bathurst. Morval became the inheritance of his eldest son from this second marriage.
John Buller , JP, DL, High Sheriff of Cornwall in 1835, MP for west Looe 1796 and 1826–27. In 1798 he married twice, firstly to Elizabeth Yorke, daughter of Hon. and Right Rev. James Yorke, Bishop of Ely, without progeny. Secondly in 1814 he married Harriet Hulse, daughter of Sir Edward Hulse, 3rd Baronet, by whom he had one son and four daughters.
John Francis Buller , of Morval, JP, DL, High Sheriff of Cornwall in 1853. He died without progeny and was succeeded by his sister Charlotte Buller, wife of Henry Hawkins Tremayne, into which family passed the estate of Morval.
Tremayne
Henry Hawkins Tremayne, JP, who in 1858 married his cousin Charlotte Buller, heiress of Morval. He was the 3rd son of John Hearle Tremayne, JP, DL, of Heligan, St Austell, Cornwall, and Sydenham House, Lew Down, Devon, High Sheriff of Cornwall in 1831, MP for Cornwall 1806–26. Henry's mother was Caroline Matilda Lemon, youngest daughter of Sir William Lemon, 1st Baronet of Carclew. He was a descendant of the ancient family of Tremayne, which in the reign of King Edward III were lords of the manor of Tremayne in the parish of St Martin, Helford Haven.
