Matthew Strickland, "Senlis, Simon (I) de", Oxford Dictionary of National Biography, Oxford University Press, 2004. DOI:10.1093/ref:odnb/25091
G. W. S. Barrow, "David I (c. 1085–1153)", Oxford Dictionary of National Biography, Oxford University Press, Sept 2004; online edn, Jan 2006 ; Maud (d. 1131): DOI:10.1093/ref:odnb/49353
