Editing Arianrhod (section)

==In other sources==
One of the Welsh Triads, 35 by [[Rachel Bromwich]]'s numbering, establishes a different family connection for Arianrhod. Her father is named as [[Beli Mawr]], and her brother is [[Cassivellaunus|Caswallawn]] (the historical Cassivellaunus). She has two sons by Lliaws son of Nwyfre, Gwenwynwyn and Gwanar, who both accompany Caswallawn in his pursuit of [[Julius Caesar]] after he has been chased from Britain. This triad is the only source connecting Arianrhod to Beli Mawr and the Caswallawn saga, but it is not incompatible with the tradition recorded in the ''Mabinogion''.<ref name="Bromwich"/> 

The stories of Welsh mythology changed over time, and the ''Mabinogion'' does not contain the only version of them. Welsh scholar [[William John Gruffydd]] noted that 15th- and 16th-century poets apparently knew an alternate tradition in which Arianrhod actually became Math's footholder.<ref name="Bromwich"/> Additionally, some scholars have suggested that in an earlier form of the Fourth Branch, Gwydion was the father of Arianrhod's sons.<ref name="MacKillop">MacKillop, ''Oxford Dictionary of Celtic Mythology'', p. 24.</ref>

Arianrhod's palace, Caer Arianrhod, is connected with a rock formation visible westward of [[Llandwrog]], North-West Wales at low tide.<ref>{{Cite web|url=https://maps.nls.uk/geo/explore/side-by-side/#zoom=13.505477242945712&lat=53.06805&lon=-4.35801&layers=1&right=ESRIWorld|title=Side by side georeferenced maps viewer - Map images - National Library of Scotland}}</ref><ref name="Bromwich"/> This formation is one of several landmarks that attest to the localization of the events in the Fourth Branch in this area. The name "Caer Arianrhod" is also used in Welsh for the constellation [[Corona Borealis]].<ref name="MacKillop"/> [[Robert Graves]] cites the riddling claim of [[Taliesin]] to have spent three periods in the prison/castle of Arianrhod,<ref>R Graves, ''The White Goddess'' (Manchester 1999) p. 77 and p. 86</ref> who Graves considers as "one more aspect of Caridwen, or [[Ceridwen]], the White Goddess...the Muse-goddess".<ref>R Graves, ''The White Goddess'' (Manchester 1999) p. 94 and p. 492</ref>