ペンブルック伯
この記事にはアメリカ合衆国内で著作権が消滅した次の百科事典本文を含む: Chisholm, Hugh, ed. (1911). "Pembroke, Earls of". Encyclopædia Britannica (英語). Vol. 21 (11th ed.). Cambridge University Press. p. 78-80.
G. T. Clark, The Earls, Earldom and Castle of Pembroke (Tenby 1880)
J. R. Planche, "The Earls of Strigul " in vol. x. of the Proceedings of the British Archaeological Association (1855)
G. E. C(okayne), Complete Peerage, vol.