Meanwhile , the Duke of Buckingham led the defence of King Henry and marched to Northampton to check the advance of the Lancastrians .
In 1460 the Yorkists invaded from Calais and marched north , taking the Lancastrians by surprise .
The Duke of Buckingham led the defence of King Henry and marched to Northampton to check the advance of the Lancastrians .
In 1460 the Yorkists invaded from Calais and marched north , taking the Lancastrians by surprise .