Woodger, L. S. (1993). "Shropshire". In Clark, Linda; Rawcliffe, Carole; Roskell, J. S. (eds.). The House of Commons 1386-1421. The History of Parliament Trust.
Woodger, L. S. (1993). "Corbet, Roger (d. 1430)". In Clark, Linda; Rawcliffe, Carole; Roskell, J. S. (eds.). The House of Commons 1386-1421. The History of Parliament Trust.
Fuidge, N. M. (1982). "Shropshire". In Bindoff, S. T. (ed.). The House of Commons 1509-1558. The History of Parliament Trust.
Hasler, P. W. (1981). "Shropshire". In Hasler, P. W. (ed.). The House of Commons 1558-1603. The History of Parliament Trust.