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.
269007695Damete de Gorum
Key Facts
Snapshot:lived in 12th-century England
Parents:Her father's identity is uncertain; see note below.
Her mother's identity is unknown.
Born:unknown
Died:by 8 August 1204
location unknown
Buried:unknown

269007695Damete de Gorum was the wife of 269007694Ranulf de Broc.1 Her father may have been William de Goram, but the evidence thereof is limited and equivocal.

Problem: Unresolved
Who is 269007695Dametta's father?

Robert Halstead writes in the 1685 book Succinct Genealogies of the Noble and Ancient Houses of Alone or de Alneto, Broc of Stephale [...] on page 27:

Charta Willielmi de Goram.

Omnibus hominibus suis & amicis, tàm Francis quàm Anglicis, tàm futuris quàm praesentibus,

Willielmus de Goram,

Salutem.

Sciatis me dedisse Terram meam de Staplehurst, Terram illam quam teneo de Willielmo Comite, Ranulpho de Broc, & Damatae, filiae meae, & haeredibus eorum, tenendum, tam liberè, & quietè, quàm illam Ego teneo, de praedicto Willielmo Comite, (scilicèt) Servitium faciendo dimidiae partis unius militis. His Testibus, Gervasio, filio Bernardi, Henrico, filio Thomae, Wil∣lielmo de Harlec, Alano de Criol, Stephano de Poisoter, Henrico de Bertsted, Roberto Selvage, cum multis aliis.

Other than the opening description ("Charta Willielmi de Goram"), Halstead doesn't otherwise explain the origin of the charter, nor have I been able to independently confirm that any such charter truly existed. Furthermore, Halstead's other content is quite fanciful (For example, on page 19 he describes 269007694Ranulf de Broc as "a Valiant, a Faithful, and a Renowned Knight" whose alliance "of his Children contracted with Great Men, and Famous Houses [...]").

Therefore, Halstead's work seems to be of questionable authenticity, and I have decided not to rely on it as evidence, at least for now.

269007695Damete owned a manor at Frobury, Hampshire.2

She must have died by 8 August 1204, when 134503846Stephen de Thurnham (269007695Damete's son-in-law) obtained a writ to take possession of the Frobury manor.2

Sources Cited:

1: Curia Regis Rolls of the Reign of Henry III (1938; Kraus reprint, 1971), page 135. This is volume 8 of the Curia Regis series, although the title page doesn't specify so. You can see a copy of select pages here or a (somewhat low-quality) machine translation to English. The most pertinent phrases are "Ranulfi del Broc patris predictarum Edeline et Sibille" and "Damete de Gorum matris ipsarum Edeline et Sibille."

2: Thomas Duffus Hardy, ed., Rotuli Litterarum Clausarum in Turri Londinensi, Volume I (1833), page 4, right column, 2nd paragraph under "Memb. 19." The year of 6 John began on 3 June 1204 and ended on 18 May 1205.