Welsh mythology
Other works connected to Welsh mythology include the ninth-century Latin historical compilation "Historia Brittonum" ( "History of the Britons" ) and Geoffrey of Monmouth's twelfth-century Latin chronicle "Historia Regum Britanniae" ( "History of the Kings of Britain" ) , as well as later folklore , such as the materials collected in "The Welsh Fairy Book" by William Jenkyn Thomas ( 1908 ) . 
<triplet> Historia Brittonum <subj> Latin <obj> language of work or name <triplet> Geoffrey of Monmouth <subj> Latin <obj> writing language <subj> Historia Regum Britanniae <obj> notable work <triplet> Historia Regum Britanniae <subj> Geoffrey of Monmouth <obj> author