Previously, I believed that the parents of 1050811Joan ___ were 2101622Thomas de Dene and 2101623Martha de Shelving. However, researcher Pete Andrews called my attention to 2101622Thomas' inquisitions post mortem, which I had overlooked. 2101622Thomas' two IPM's strongly suggest that he is not 1050811Joan's father (since the IPM explicitly notes 2101622Thomas' daughter Joan as deceased in early childhood, among other incongruences).

Nevertheless, because 1050811Joan certainly seems to be related to 2101622Thomas in some manner, and because my older work could prove useful for future research, I've isolated the profile pages that I'd written for 1050811Joan's formerly proposed ancestors into a separate section of my website, starting from the old version of Joan's page onward.

You can see a list of those ancestors or a family tree of them.
4203244William de Dene
Key Facts
Parents:unknown
Born:unknown
Died:not long before 14 May 1341
presumably Kent, England
Buried:unknown

Note: I'd like to extend special thanks to researcher Jared Nathan for sharing his work pertaining to 4203244William de Dene.

Mary Deane's book The Book of Dene, Deane, Adeane: A Genealogical History on pages 5 and 6 makes several interesting claims about 4203244William's activities as a court official, but sadly the author didn't cite her sources. If you can corroborate her claims with reliable sources, please contact me.

4203244William de Dene had married 4203245Elizabeth de Gatton by 1313.1 On 17 May 1317, they were granted free warren of their demesne lands in Boughton Malherbe, Throwley, Wormshill in Kent.2

A close roll entry dated 13 March 1337 shows that William had been the seneschal of Agen, probably in the recent past.3

Sir 4203244William de Dene, knight, was noted as the creditor for a debt in Kent, England on 10 January 1338.4

He had died by 14 May 1341, when a writ was issued for an inquisition post mortem of his estate. The inquisition mentions 4203245Elizabeth and explicitly specifies that she was the mother of 4203244William's son 2101622Thomas. The inquisition also shows that 4203244William still owned the three manors noted above (Boughton Malherbe, Throwley, and Wormshill).5

Sources Cited:

1: Placitorum in Domo Capitulari Westmonasteriensi Asservatorum Abbreviatio [...] (1811), page 318, left column, penultimate paragraph

2: Calendar of the Charter Rolls Preserved in the Public Record Office, Volume III (for years 1300-1326), Edward I and II (London, 1908), page 340.

3: Calendar of the Close Rolls Preserved in the Public Record Office, Volume IV (for years 1337-1339), Edward III (London, 1896), page 31. Note that this page contains a typographical error: Although the top of the page is labeled “1387,” comparing it with other, nearby pages makes clear that this should have been “1337.”

4: UK National Archives reference C 241/111/85. I have not seen the original record and merely used the abstract at the link provided.

5: Calendar of Inquisitions Post Mortem and Other Analogous Documents Preserved in the Public Record Office, Volume VIII, Edward III, Part 1 (London, 1913), page 228