This probably refers to Roosendaal in North Brabant in the Netherlands. It might be his surname or a reference to his place of origin.
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3162
Roger Bakoun, Geoffrey Lystere et al break into Great Yarmouth gaol and behead prisoners
They also say that the aforesaid Roger Bakon, Geoffrey Lystere and their associates on Wednesday 19th June 1381 at the said town of Great Yarmouth feloniously broke open the king's gaol of the town of Great Yarmouth and led out the prisoners and beheaded them.
Names of the prisoners beheaded:
Copyn Sele of Zieriksee
John de Rosendale
Copyn Ysgang
and John Cook of Coventry was feloniously released.
