So we have John Grenville who held the offices of Rector of Kilkhampton from 1524–1580, Rector of Week St. Mary from 1558-1580, and Vicar of Launcells and Morwenstow.
We know Philippa Bonville married William Grenville, Esq., no later than 1431. We have statements in print by Roger Granville (Rector of Bideford) that read, “Lord Bonvill died possessed of the manors of Week St. Mary, Swannacote, and other tenements in the hundred of Stratton, in Cornwall, and the whole of this property came into William de Greynvill's possession by this marriage.” It is apparent that Lord Bonville did not die possessed of the manor of Week St. Mary, but rather lands in Week St. Mary. This would appear to be the lands Philippa received and much later after her marriage to William Grenville, Esq. We also know that a Grenville (who was a great-grandson of Philippa Bonville) was a Rector of Week St. Mary. There are earlier sources to Roger Granville which state that Sir William Bonville, 1st Lord Bonville died possessed of lands in Week St. Mary, along with the advowson of Week St. Mary. The History of Parliament biographies on notable Grenvilles state, “Grenville belonged to a family which had settled in Devon soon after the Conquest. The family property as held in the early 14th century consisted of the manors and advowsons of Kilkhampton and Bideford.” It seems apparent that the Grenville family held lands and the advowsons for both Kilkhampton and Week St. Mary in Cornwall.
See the following references:
Edinger & Neep. A Handbook of Church Law for the Clergy. (1928). (author states, “Advowsons were frequently used by lords and landowners as a means of providing a career and income for a younger son.”).
Rowse, A.L. Sir Richard Grenville, (1937), (author states, “Sir Thomas had willed his son John … He was fortunately so disposed, and thus Kilkhampton came by its Rector (1524-1580) … he retained it, along with Launcells from 1533-1545, then with Week St. Mary till his death in 1580.").
John Grenville was the younger son of Sir Thomas Grenville II, K.B, and the great-grandson of Philippa Bonville. John Mulsworth assumed the office in 1509. He was obviously not removed; however, the Rectorship did become vacant upon his death. John Grenville would also become Vicar of Launcells and Morwenstow.
We also find in the following reference:
The Western Antiquary: Devon & Cornwall. The Blanchminsters of Bien-Aime Castle, v. 12, (1893). (author states, “The last Earl of Bath died without issue 1711, and the estates in Devon and Cornwall, which had been in the male line of the family for many centuries, were claimed by two aunts … In later times the Grenvilles held the manors of Swannacote, Bynnamy, Ilcombe, Aldercombe, and other places, as well as Stow in the Hundred of Stratton. In 1776, when the property was thrown into the Court of Chancery, it was described as follows; ‘Stanbury, Pengelly, Widemouth, Binhamy, North Lee and Woodford, Kilkhampton Woods, Kilkhampton advowson, and Week St. Mary advowson.’ ").
The Grenville family held the advowsons for both Kilkhampton and Week St. Mary for many centuries. This is the official Court of Chancery record in 1776 listing the two advowsons of the Grenville family which they held for at least three centuries.