Immediately, the king's escheators (officers meant to keep track of where a decedent's inheritance goes) seized everything, including the Lancaster estates. She made a plea to the king in March, and got the estates returned, along with an annuity of £1000. Later, the king allowed her to keep the estates she had been given prior to marriage with Gaunt, but took the Lancastrian estates, since the king would have to find a new Duke of Lancaster. She gave the estates of Kettlethorpe and Colby (received from her first husband, Sir Hugh Swynford), to her only son from that marriage, Thomas as Swynford. She moved to a rented house in Lincoln, where she lived out the rest of her days.
All this took place in 1399. In the fall of that year, Gaunt's son Henry Bolingbroke (who had been exiled for life by Richard) returned to England, deposing Richard and crowning himself Henry IV. Katherine and Gaunt's children, the Beauforts, and Thomas Swynford supported Henry.
Although the new king referred to Katherine officially as "the Mother of the King," she did not return to court life, staying quietly in Lincoln and all but disappearing from history. In 1400 Henry gave her a new estate in Yorkshire, and £200 of the annual rents of Huntingdonshire, as well as an annuity of 700 marks (this was all in addition to the £1000 that had been assigned to her long ago by Gaunt). She had more than enough to live comfortably anywhere in the kingdom.
She died on 10 May 1403 and was buried in a tomb in Lincoln Cathedral (see the illustration). Made of fine marble and decorated with heraldic shields, with a carved likeness of her on top, it was topped with a brass canopy. The figure of her was partially damaged in 1644 during the English Civil War.
The king who exiled Gaunt and Bolingbroke, Richard II, has been mentioned many times, but not directly discussed. I'll tell you tomorrow about a king who was a boy who did not speak the language of the country he ruled.