Маргарет де Квинси, графиня Дерби (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Маргарет де Квинси, графиня Дерби" in Russian language version.

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doi.org

dx.doi.org

  • Oram Richard D. Quincy, Roger de, earl of Winchester (c.1195–1264) // Oxford Dictionary of National Biography (англ.).
  • Acheson Eric. Ferrers family (per. c.1240–1445) // Oxford Dictionary of National Biography (англ.).
  • Maddicott J. R. Ferrers, Robert de, sixth earl of Derby (c.1239–1279) // Oxford Dictionary of National Biography (англ.).

fmg.ac

thepeerage.com

tudorplace.com.ar

web.archive.org