 Jane Dudley ( née Guildford ) , Duchess of Northumberland ( <unk> / <unk> – 1555 ) was an English <unk> , the wife of John Dudley , 1st Duke of Northumberland and mother of Guildford Dudley and Robert Dudley , 1st Earl of Leicester . Having grown up with her future husband , who was her father 's ward , she married at about age 16 . They had 13 children . Jane Dudley served as a lady @-@ in @-@ waiting at the court of Henry VIII and was a close friend of Queen Catherine <unk> . Reformed in religious outlook , she was also a supporter of the Protestant martyr Anne Askew . 
