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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3166
Roger Bakon, Geoffrey Lyster et al break into Great Yarmouth gaol and behead the prisoners
[The jurors] also say that the aforesaid Roger Bacon, Geoffrey Lystere and their aforesaid associates [...] on Wednesday 19th June 1381 broke open the king's gaol in Great Yarmouth and led out the prisoners and beheaded them.
Names of the said prisoners:
Nicholas Sele of Zieriksee
John Rosyndale
[...]
[John de] Coventre was released.