Barry based the memorial on the three surviving drawings of the Charing Cross, in the Bodleian Library, the British Museum and the collection of the Royal Society of Antiquaries. However, due to the fragmentary nature of this evidence, he also drew from a wider range of sources including the other surviving Eleanor crosses and Queen Eleanor's tomb at Westminster Abbey.[2] In this search for precedents Barry was assisted by his fellow architect Arthur Ashpitel.[3] The coats of arms of England, León, Castile and Ponthieu appear on the monument.[1]
^Ward-Jackson, Philip (2011), Public Sculpture of Historic Westminster: Volume 1, Public Sculpture of Britain, vol. 14, Liverpool: Liverpool University Press, pp. 257–8
^Bradley, Simon; Pevsner, Nikolaus (2003), London: Westminster, The Buildings of England, vol. 6, London and New Haven: Yale University Press, p. 300