3 Tachwedd – Thomas Montacute, Iarll 4ydd Caersallog, 40 (yn y Gwarchae Orléans)[4]
Cyfeiriadau
↑Banda, E.; Correig, A. M. (1984), "The Catalan earthquake of February 2, 1428" (yn en), Engineering Geology (Elsevier) 20 (1–2): 89–97, doi:10.1016/0013-7952(84)90045-0