Complete Peerage 2 (1912): 61 (sub Beaumont) states that Katherine
Everingham, widow of Sir John Beaumont, Lord Beaumont, "died 1426."
No source is given for the death date.
Calendar of Fine Rolls, 15 (1935): 137 indicates that a writ of diem
clausit extremum for "Katherine late the wife of John de Bello Monte,
'chivaler'" was issued 1 February 1426/7. As such, it would appear
that Katherine (Everingham) Beaumont died shortly before 1 February
1426/7.
Best always, Douglas Richardson, Salt Lake City, Utah
E-mail: royala...@msn.com