Siward (or Sigweard) was a medieval Bishop of Rochester.
Siward was abbot of Chertsey Abbey, a Benedictine abbey in Surrey before he was selected for the see of Rochester.
[2] His death was commemorated on 30 October, so he probably died on that date in 1075.
[1] After the appointment of Lanfranc as Archbishop of Canterbury, the new archbishop found only four canons at Rochester under Siward's authority.
This article about an English bishop or archbishop is a stub.