Suffolk is a county with a direct link to the Saxon Patron Saint of England, St Edmund.

St Edmund who was killed after defeat by the Danes was King of East Anglia, he is buried at Bury StEdmunds,

There is a campaign to restore Edmund as Patron Saint of England and a flag was produced in his honour.  The flag is a Cross of St George (which is odd considering he is the only rival for the position) with a shield in the centre.

Here is it

The Suffolk flag as flown by the council is the county coat of arms, the flag which can be purchased is shown below

It does show it's Royal connection with two crowns atop the main design, a link to StEdmund?