Editing Lady Katherine Grey (section)

==Second marriage==
[[File:Edward Seymour, Earl of Hertford, Attributed to Hans Eworth (1515 - 1574).jpg|thumb|Oil on panel portrait of Edward Seymour attributed to Hans Eworth]]
One of Katherine's friends, [[Jane Seymour (writer)|Lady Jane Seymour]], daughter of the [[Edward Seymour, 1st Duke of Somerset|Duke of Somerset]], introduced her brother, [[Edward Seymour, 1st Earl of Hertford]], to Lady Katherine Grey (so [[Style (manner of address)|restyled]] after the annulment of her first marriage). Without [[royal assent]], the two were married in late December 1560 during a secret ceremony<ref>{{Cite web|title=Queen Elizabeth I and Bess of Hardwick|url=https://www.nationaltrust.org.uk/hardwick/features/queen-elizabeth-i-and-bess-of-hardwick|access-date=2021-01-26|website=National Trust|language=en}}</ref> at Lord Hertford's house in [[Cannon Row]], where Lady Jane Seymour was the [[Witness|sole witness]].<ref name="Lisle">{{Cite web|last=Lisle|first=Leanda de|date=2017-08-15|title=The Last Tudor: New novel examines Elizabeth I and the threat to her throne|url=https://www.express.co.uk/life-style/life/840961/The-Last-Tudor-novel-Elizabeth-I-threat-throne-Grey-sisters|access-date=2021-01-26|website=Express.co.uk|language=en}}</ref>

Soon thereafter, the Queen despatched Lord Hertford with [[Thomas Cecil, 1st Earl of Exeter|Thomas Cecil]], eldest son of [[William Cecil, 1st Baron Burghley|Sir William Cecil]], on a [[grand tour]] across [[Europe]] "for the improvement of their education".<ref>{{Cite book|last=Davey|first=Richard|url=https://books.google.com/books?id=o-IqDwAAQBAJ&q=lady+katherine+grey+%22cannon+row%22&pg=PT121|title=The Sisters of Lady Jane Grey and Their Wicked Grandfather: Being the True Stories of the Strange Lives of Charles Brandon, Duke of Suffolk, and the Ladies Katherine and Mary Grey, Sisters|date=2020-09-28|publisher=Library of Alexandria|isbn=978-1-4656-1655-5|language=en}}</ref> The Earl of Hertford provided his wife with a [[Affidavit|document]] that would, in the event of his death, enable her to prove the marriage and inherit his property,<ref>Chapman, p. 197</ref> but apparently Katherine lost the document. Thus, after Lady Jane Seymour died of [[tuberculosis]] in 1561, Katherine was unable to prove that they had ever been married.<ref name="Lisle"/>