Sir Sir John Arundel of Conerton, of Conerton

"In 1358, Sir John Arundel of Conerton granted to Ralph Arundel de Trerys lands in Crenver and Boutfold, for a service of one peppercorn annually (CRO AR/1/104 - in their annotation they point out that Vivian cites this as referring to Ralph as cousin of Sir John, but that nothing in the original document says so). In 1371, there were three Johns of the Lanherne line living. Sir John had apparently just remarried to Isabel, daughter of Thomas de Molton and makes a settlement on his heirs by her body, with default to John, son of Sir John, and later provisions to be carried out during the life of John, son of John, son of Sir John (CRO AR/20/4). From an agreement on 1394, it is clear that Joan, widow of the father of (a) John Arundel of Lanherne remarried to William Lambroun (CRO AR/17/1). The document also mentions the rents given Sir John, an apparently distinct person, by Joan, widow of Ralph (see above). The CRO annotations identify this woman as Joan Luscott, but Vivian wrongly shows her husband d. 1400 (her proof of age says that she was born in 1353, and married to John but childless in 1367). The John of 1394 is apparently the same John who in 1396 was found to be aged 28, son of Sir John Arundell, son of Elizabeth, daughter of Oliver de Carmynowe. I suspect that this ipm is in error in calling the father a knight."

https://soc.genealogy.medieval.narkive.com/JahuUk7q/oliver-arundel-of-carhayes