a short summary from Wikipedia:

"Eleanor Maltravers, 2nd Baroness Maltravers (Mautravers) suo jure (1345/c. 1346 – 10/12 January 1404/1405) was an English noblewoman and heiress during the reigns of King Edward III of England and his successors."

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Links:

http://en.wikipedia.org/wiki/Eleanor_Maltravers

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=7724543

http://histfam.familysearch.org/getperson.php?personID=I4655&tree=PagetHeraldicBaronag

http://histfam.familysearch.org/getperson.php?personID=I324&tree=Surrey1530-1572-1623

http://histfam.familysearch.org/getperson.php?personID=I143152&tree=Welsh

http://homepages.rootsweb.ancestry.com/~cousin/html/p427.htm#i23300

http://www.multiwords.de/genealogy/Ma19%20Eleanor%20Maltravers.html

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Citations / Sources:

[S2411] #11915 British Genealogy (filmed 1950), Evans, Alcwyn Caryni, (Books A to H. National Library of Wales MSS 12359-12360D. Manuscript filmed by the Genealogical Society of Utah, 1950), FHL microfilms 104,355 and 104,390 item 2., book 1 p. 45.

[S1800] #771 The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, Cedewen and Meirionydd (1881-1887), Lloyd, Jacob Youde William, (6 volumes. London: T. Richards, 1881-1887), FHL book 942.9 D2L; FHL microfilms 990,213-990,214., vol. 1 p. 375.

[S2] Paget Heraldic Baronage, Paget, Gerald, (Manuscript, filmed by the Genealogical Society of Utah, 1957), chart no. 136 Cobham of Sterborough, FHL microfilm 170063, 2/2.

[S2] Paget Heraldic Baronage, Paget, Gerald, (Manuscript, filmed by the Genealogical Society of Utah, 1957), chart no. 211 Fitz Alan, Earls of Arundel, and etc., FHL microfilm 170064.

[S2] Paget Heraldic Baronage, Paget, Gerald, (Manuscript, filmed by the Genealogical Society of Utah, 1957), chart no. 349 Maltravers, FHL microfilm 170066.

[S3] The Visitations of the County of Surrey Made and Taken in the Years 1530 by Thomas Benolt, 1572 by Robert Cooke and 1623 by Samuel Thompson and Augustin Vincent, Bannerman, William Bruce, (London : Harleian Society, 1899), FHL book 942 B4h vol. 43; microfilm 162,063 item 2., vol. 43 p. 8.