I need help with my Cantilupe and St. John connection. I descend from Robert (de Port) St. John (c. 1200-1269) whose wife was Agnes. Agnes’ surname is consistantly stated to be “de Cantilupe” (various spellings), the daughter of William de Cantilupe. I have a primary source documentation of her given name of Agnes
https://babel.hathitrust.org/cgi/pt?id=uc1.31158009187690&view=1up&seq=418
I have a primary source evidence that Agnes survived her husband and was remarried to John Turvill.
https://babel.hathitrust.org/cgi/pt?id=mdp.35112103127082&view=1up&seq=429 What I am searching for is a primary source that documents that Agnes’ maiden surname was “de Cantilupe” (various spellings).
Assuming Agnes was a “de Cantilupe” (which I am hoping is correct) I am looking for a primary source that her father was a William de Cantilupe. I am also looking for a primary source that a William de Cantilupe of the right age (estimated to have been born about 1180) had a daughter named Agnes.
Assuming Agnes de Cantilupe was the daughter of a William de Cantilupe, which William de Cantilupe? I have found no primary sources on this topic. The prevailing view of secondary sources is that her parents were William de Cantilupe and Millicent de Gournay. While this genealogy could work time-wise, I have seen no primary source evidence of William de Cantilupe and Millicent de Gournay having a daughter named Agnes. There are other reasons that cause me not accept this genealogy without a primary source.
My line of descent from Robert St. John and Agnes is through their younger son, William St. John, Lord of Fonmon (as he was described in a c. 1290 deed). Fonmon is a castle/manor in Glamorgan, Wales The prevailing view is that Fonmon was part of the Umfreville 4 fees of Penmark in Glamorgan, Wales, but I am in debate with another St. John researcher about this issue. In any case, the point here is somehow William St. John acquired the manor of Fonmon in Glamorgan, Wales. He may have been the original St. John owner, acquiring it from his overlord, or it may have been property that was owned by his father, Robert St. John, which was either granted to him by is father during his father’s lifetime or transferred to him by the terms of a trust created by his father during his lifetime, or was inherited by the terms of his father’s Will (if he had one) or by the laws of intestate succession. If Robert St. John, either through his marriage or by his right of inheritance owned Fonmon manor/castle during his lifetime then, although his primary residence was Basing, Hampshire, England, he had connections in Glamorgan Wales.
There is a poorly unsourced account of the St. John family entitled "Notitia St. Johanniana: or, Genealogical and Historical Memoirs of the Most Ancient, Illustrious and Noble Family of St. John . . . .", published by Richard Newcomb, sold by John Baker (1713). On pages 20 and 27, it say this Robert St. John’s younger son, William St. John had “Faumont” (i.e., Fonmon) in appendage while his eldest son, John St. John was the heir and received Basing.
https://www.google.co.uk/books/edition/Notitia_St_Johanniana_or_Genealogical_an/2UhgAAAAcAAJ?hl=en&gbpv=1 This statement is unsourced and other parts of the St. John family account presented in this book have serious errors so it is unclear to me whether the author of this account had primary source evidence that Robert de St. John actually owned Fonmon manor/castle and gave it (by lifetime transfer or by death transfer) to his son “in appendage” or whether this was just an undocumented assumption of the author.
There is a William de Cantelo (Cantilupe) who witnessed a charter and confirmation by Roger Sturmi, son of Roger Sturmi to Margam Abbey involving land the Earl of Gloucester gave his grandfather, Geoffrey Sturmi. Other witnesses included Herbert St. Quintin, John St. Quintin, his son, Adam de Sumeri, Ingeram de Penmarch and Luke de Barri.
https://archive.org/details/historyofmargama00bircuoft/page/79/mode/1up?q=Cantelo This William de Cantilupe was an adult of the right age to have parented Agnes de Cantilupe who married Robert St. John. My educated guess is that this William de Cantilupe who was connected with Margam Abbey in Glamorgan, Wales, is not the William de Cantilupe who was married to Millicent de Gournay. I realize that the story line about William de Cantilupe who was married to Millicent de Gournay says that he had a connection with the Marches of Wales, but where is the primary source evidence of this? Was this just an assumption that the two William de Cantilupes were the same person?
The William de Cantilupe with connections to Margam Abbey in Glamorgan, Wales, was almost certainly the William de Cantilupe who was once an owner, or at least an occupant, of the manor/castle of Candleston in Glamorgan, Wales, discussed in this article.
https://journals.library.wales/view/2527656/2908479/64#?xywh=-391%2C2093%2C2902%2C1863 Of particular interest in this article is that account of the Cantilupe coat of arms that was said to have been in the fireplace mantle of Candleston Castle, given as “– a leopard’s face resting upon a Fleur-de-lys, the lower part of the flower issuing from the animal’s mount.” Does anybody have knowledge of the coat of arms of the of the Cantilupe family that included William de Cantilupe who married Millicent de Gournay?
My research of the Liber Niger (c. 1166) and later records of the holdings of the Earl of Gloucester in Glamorgan suggest that the Umfrevilles owned the 4 fees of Penmark that descended down their family until the later part of the 14th century of which they created sub-manors, one of which I believe was the manor/castle of Fonmon. The property to the west of the Umfreville property appears to have been the property of the Nereberts called Aberthaw who lived in a manor/castle called Castleton, not to be confused with Candleston) and they were later referred to as being located at St. Athan/Thathan., Glamorgan, Wales. While I am not certain of this, I think that Candleston manor/castle was originally owned by the St. Quintins and later came to the Cantilupe family and if it was not adjacent to the Nerebert’s property to the west, it was very close to it to the west.
There is one other dangling Cantilupe claim that I want to discuss before I close. I don’t have access to Peter Bartrum’s collection of Welsh Genealogies. From this previous discussion at this site (starting with this message)
https://groups.google.com/g/soc.genealogy.medieval/c/VbdYy1MmCyc/m/j8lPNyvE2GAJ I gather that Peter Bartrum concluded that Sir William de Cantilupe had an unknown daughter who he apparently alleged to have some connection with Hywel Fycham ap Hywel. Someone has converted this unknown Cantilupe daughter into Agnes de Cantilupe. Based on the discussion in this thread, it appears that Bartram’s claim/assumption/speculation is distrusted. What I distrust is that Agnes, wife of Robert St. John, assuming she was the daughter of a William de Cantilupe, is connected with Hywel Fycham ap Hywel. I am not sure whether Bartram is the source to be distrusted or whether some other person who converted “unknown” de Cantilupe into Agnes de Cantilupe is the person to be distrusted., or both. A person I have been working with to sort out the St. John families and whose research and analyzing skills I have grown to trust, I think has “fallen of the deep end” on this topic. She feels she had “figured out” the ancestry of Agnes de Cantilupe, I think by reliance on this distrusted information, which I believe is greatly confusing matter. She presents her findings at her St. John website. Here is the link (you will have to navigate back from Agnes de Cantilupe).
https://stjohngenealogy.com/getperson.php?personID=I104783400&tree=OSA0001 According to her presentations, Agnes de Cantilupe’s father was William ap Hopkin de Cantilupe and his father was Hywel Fycham ap Hywel. This seems incredible to me. I hope to generate a discussion in this thread that can sort out the truth of the matter.