 King Edward fell ill in early 1553 . He drew up a document , " My Devise for the Succession " , whose final version of June 1553 was to settle the Crown on his Protestant cousin Lady Jane Grey , overturning the claims of his half @-@ sisters Mary and Elizabeth . Jane Grey was the daughter of Frances Grey , Duchess of Suffolk , a niece of Henry VIII by his younger sister Mary . On 25 May 1553 three matrimonial alliances were celebrated at Durham Place , the Dudleys ' London town mansion . Two of their younger children were concerned : Guildford , aged about 17 , married Lady Jane Grey , while Katherine , who was between eight and ten years old , was promised to the Earl of Huntingdon 's heir , Henry Hastings . A few months later these matches came to be seen as proof of a conspiracy by the Duke of Northumberland to bring his family to the throne . At the time the marriages took place , however , their dynastical implications were not considered significant by even the most suspicious of observers , the Imperial ambassador Jehan de Scheyfye . Modern historians have considered them either as part of a plot , or as " routine actions of dynastic politics " , in the words of David Loades . The initiative for the matches had probably come from the Marchioness of Northampton . 
 King Edward fell ill in early 1553 . He drew up a document , " My Devise for the Succession " , whose final version of June 1553 was to settle the Crown on his Protestant cousin Lady Jane Grey , overturning the claims of his half @-@ sisters Mary and Elizabeth . Jane Grey was the daughter of Frances Grey , Duchess of Suffolk , a niece of Henry VIII by his younger sister Mary . On 25 May 1553 three matrimonial alliances <a href='uninflect' title='1'><mark>were</mark></a> celebrated at Durham Place , the Dudleys <a href='null_genetive' title='2'><mark>'</mark></a>London town mansion . Two of their younger children <a href='uninflect' title='3'><mark>were</mark></a> concerned : Guildford , aged about 17 , married Lady Jane Grey , while Katherine , <a href='null_relcl' title='4'><mark>who</mark></a>was between eight and ten years old , was promised to the Earl of Huntingdon <a href='null_genetive' title='5'><mark>'s</mark></a>heir , Henry Hastings . A few months later these matches came to be seen as proof of a conspiracy by the Duke of Northumberland to bring his family to the throne . At <a href='None' title='6'><mark>the</mark></a><a href='negative_concord' title='7'><mark>time</mark></a> the marriages took place , however , their dynastical implications <a href='uninflect' title='8'><mark>were</mark></a> not considered significant by even the most suspicious of observers , the Imperial ambassador Jehan de Scheyfye . Modern historians <a href='been_done' title='9'><mark>have</mark></a> considered them either as part of a plot , or as " routine actions of dynastic politics " , in the words of David Loades . The initiative for the matches <a href='been_done' title='10'><mark>had</mark></a> probably come from the Marchioness of Northampton . 
King Edward fell ima in early 1553 . He drew up a document , " My Devise fir the Succession " , whose final version of June 1553 was to settle the Crown on his Protestant cousin Lady Jane Grey , overturning da claims of his half @-@ sisters Mary and Elizabeth . Jane Grey was the daughter of Frances Grey , Duchess of Suffolk , a cuzo of Henry VIII by his younger sister Mary . On 25 May 1553 three matrimonial alliances was celebrated at Durham Place , tdaDudleys  London town mansion . Two of their younger children was concerned : Guildford , aged about 17 , married Lady Jane Grey , while Katherine , was between eight and ten yrs old , was promised to thdaarl of Huntingdon  heir , Henry Hastings . A few months later dem matches came to be seen as proof of a conspiracy by the Duke of Northumberland to bring his fam to thedarone . At no time the marriages took place , however , their dynastical implications was not considered significant by even the most suspicious of observers , the daerial ambassador Jehan de Scheyfye . Modern historians done considered them either as part of a plot , or as " routine actions of dynastic politics " , in the wdas of David Loades . The initiative fir the madaes done probably come from the Marchioness of Northampton .