Update

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I have added some info and sources in an effort to expand this stub. I would like to note one particular detail, which involves Siward's marriage to Philippa Basset. The original article cited that this event transpired in 1229. In one of my source [1], the date was 1230. Any sources, thus, that could corroborate the dates would help improve the article further. Thanks.

References

  1. ^ Vincent, Nicholas (1996). Peter Des Roches: An Alien in English Politics, 1205-1238. Cambridge: Cambridge University Press. pp. 400, 405. ISBN 0521552540.