On 26 Oct 2003, Doug Richardson quoted from the registers of Godfer Gifford, bishop of Worcester:

"Date: 1301
"Agreement made on 5 June, 29 Edward I. [1301], before the bishop,
between Sir Alexander de Frevylle and Eustace de Wyteneye, touching
the marriage between the said Eustace and Elizabeth, daughter of the
said Alexander.  Various settlements of lands, &c.  Witnesses: Sir
Robert de Chaundos, the lady Joan de Friville, mother of the lady, and
John de Stan', parson of Rippel'."

Date: 1301: "Memorandum of a bond by the bishop for 66l. 13s. 4d., to
Eustace de Whyteneye, husband of Elizabeth de Frevyll, upon his
marriage."). END OF QUOTE.

The above record indicates that Eustace de Whitney was married about 5
June 1301 to Elizabeth de Freville, daughter of Sir Alexander de
Freville (died 1328), of Tarrington, co. Hereford, by his wife, Joan
de Cromwell.  Bishop Giffard was evidently interested in Elizabeth de
Freville's marriage, as he was the maternal uncle of Elizabeth's
father, Sir Alexander de Freville.

If anyone descends from the Whitney family, I'd appreciate it if they
would post what particulars they have regarding this Eustace de
Whitney.  Many newsgroup posters descend from Elizabeth de Freville's
brother, Baldwin de Freville, Knt., and from her sister, Margaret
(wife of Henry de Wilington).  Elizabeth de Freville and her siblings
possess Carolingian ancestry through their mother, Joan de Cromwell's
Marmion ancestry."

I do not know his source for asserting that Margaret was dau. of Alexander de Freville, but am accepting it for the mo.