caption father predecessor successor succession house mother death_date image_size birth_date spouse issue image article_title
arms norfolk , kg of sir john mowbray , 3rd duke of john de mowbray , 2nd duke john de mowbray , 2nd duke of norfolk john de mowbray , 4th duke of norfolk duke of norfolk house of mowbray lady katherine neville 6 november 1461 240px 12 september 1415 eleanor bourchier john de mowbray coat duke of norfolk , kg.png of arms of sir john mowbray , 3rd john de mowbray , 3rd duke of norfolk

john de mowbray , 3rd duke of norfolk

sir john de mowbray , 3rd duke of norfolk -lrb- 12 september 1415 -- 6 november 1461 -rrb- was an important player in the wars of the roses .
he was the son of john mowbray , 2nd duke of norfolk and lady katherine neville .
he succeeded to the hereditary office of earl marshal in 1432 , on the death of his father .
as he was under age at his father 's death , he was placed under the protection of humphrey , duke of gloucester and in 1436 accompanied gloucester on an expedition to relieve calais .
in 1437 -- 8 he served a year 's term as warden of the east march and in 1438 he was one of the leaders of an expedition to strengthen the defences of calais and guînes .
at the beginning of the war of the roses in 1450 he supported richard , duke of york , the leader of the yorkist faction .
however , in 1459 , he swore allegiance to the lancastrian henry vi .
he then quickly changed sides back to the yorkists .
in february 1461 he fought for the defeated yorkists in the second battle of st albans .
in march 1461 -lrb- richard , duke of york now being dead -rrb- he was one of those who asked the duke 's son , the earl of march , to become edward iv , and later that month his intervention at the battle of towton was decisive .
the battle took place in a snow storm between 80,000 men .
neither side could get an advantage until about midday norfolk entered the battle on the yorkist 's right flank .
the lancastrians then began to slowly fall back .
as earl marshal , mowbray then officiated at edward iv 's coronation .
he died at the age of 46 , and was buried at thetford priory .
he was succeeded by his only son , john .
