Dear Newsgroup ~
Complete Peerage 5 (1926): 305–310 (sub Ferrers) has a good account of Sir John de Ferrers, Knt. (died 1312), lst Lord Ferrers of Chartley. Regarding his marriage, the following information is provided:
"He married between 2 Feb. 1297/8 and 13 Sept. 1300 Hawise, daughter and heiress of Sir Robert de Mucegros, of Stowell, Norton, and Charlton, Somerset, Kemerton and Bodddington, co. Gloucester, Hampstead and Aldworth, Berkshire, by Agnes his wife. She was widow of William de Mortemer, of Bridgwater, Milverton, and Odcombe, Somerset, Crendon, Bucks. .... who d.s.p. shortly before 30 June 1297, but this marriage had not been consummated .... probably in August 1312, John [de Ferrers] died in Gascony, of poison, it is said ... His widow [Hawise] married Sir John de Bures ... She, who was born 21 Dec. 1276, was living 24 June 1340, but died before him. He [John de Bures] died at Boddington, 21 or 22 Dec. 1350." END OF QUOTE.
On page 310, footnote a, the editor provides the following source for the last known date that Hawise de Muscegros was alive:
"Close Roll, 14 Edw. III., p. 1, m. 9 d. In an Inq. p. m. (Ch., Edw. III, file 87), taken 17 Nov. 1347, she is alluded to as living, but such statements are often incorrect." END OF QUOTE.
So we are told that Hawise de Muscegros was living 24 June 1340, and that she might have been living 17 Nov. 1347.
Recently I located a Common Pleas lawsuit dated Easter 1348, which proves that Hawise de Muscegros was living as late as that date. An abstract of the lawsuit is provided below.
In Easter term 1348 John de Bures and his wife, Hawise, sued _____ Fowyere, of Bicknor, Gloucestershire regarding one messuage and two acres of land in Bicknor, Gloucestershire. Reference: Court of Common Pleas, CP40/354, image 954, available at the following weblink:
http://aalt.law.uh.edu/E3/CP40no354/aCP40no354frNo1to200/IMG_0954.htm).
The above lawsuit concerns land at [English] Bicknor, Gloucestershire, which property was part of Hawise de Muscegros' own inheritance. For further particulars on this property, please see VCH Gloucester (1996): 106–107, which may be viewed at the following weblink:
http://www.british-history.ac.uk/vch/glos/vol5/pp101-117
Modern historians think that Hawise de Muscegros is perhaps buried in the church of English Bicknor, Gloucestershire. See Verey and Brooks, Gloucestershire 2: The Vale and the Forest of Dean (1970): 359, available at the following weblink:
https://books.google.com/books?id=m9W2XH11-9EC&pg=PA359
In summary, the above Common Pleas lawsuit shows that Hawise de Muscegros was living as late as Easter term 1348. She may possibly be buried in the church of English Bicknor, Gloucestershire.
For interest's sake, the following is a list of the 17th Century New World immigrants that descend from Hawise de Muscegros and her 1st husband, Sir John de Ferrers:
Robert Abell, Dannett Abney, William Bladen, George & Nehemiah Blakiston, Thomas Booth, Elizabeth Bosvile, George, Giles & Robert Brent, Edward Carleton, Kenelm Cheseldine, Grace Chetwode, Henry Corbin, Elizabeth & Thomas Coytemore, Frances, Jane, & Katherine Deighton, Margaret Domville, Rowland Ellis, John Fenwick, Edward Foliot, Thomas Gerard, Muriel Gurdon, Daniel & John Humphrey, Mary Launce, Thomas Ligon, Oliver Manwaring, Anne, Elizabeth & John Mansfield, Anne & Katherine Marbury, Anne Mauleverer, John and Margaret Nelson, Philip & Thomas Nelson, Elizabeth, Joshua, & Rebecca Owen, Thomas Owsley, George Reade, Thomas Rudyard, Richard Saltonstall, Mary Wolseley, Amy Wyllys.
The following is a list of the 17th Century immigrants that descend from Hawise de Muscegros and her 2nd husband, Sir John de Bures:
Robert Abell, Thomas Booth, Elizabeth Bosvile, George, Giles & Robert Brent, Charles Calvert, Frances, Jane & Katherine Deighton, Edward Foliot, Edmund, Edward, Matthew, & Richard Kempe, Thomas Ligon, Thomas Owsley, Mary Johanna Somerset, Hawte Wyatt, Amy Wyllys.
Best always, Douglas Richardson, Salt Lake City, Utah