"Dirrangan" is from an unwritten IE language, and is a goddess who forcefully holds back river-waters of a spring.
The root appears to be Skt. dur 1 " opens, unlocks". dur 2 "bad" , -difficult to be won over, -improper gain,
or dhur, dhura "summit, wealth, Ganges river". Welsh dyrys= caledrwydd "difficulty", which may suggest derwydd "druid".
"Angan" is Skt., in the local word angourie "to wait" , Skt. "time, system, number, my interests, living in forest". Welsh angen "necessity".
This may be nonsense ... but.. the local word ngahynba means "snakes", as in anghenfyn "snakes" in Old Welsh.
In Vedas, snakes hold or release river-waters. Thus, "Dirrangan ngahynba" may relate to Welsh "angen anghenfyn".
A further link is Danaan of Boyne river, Don, Danube river, Dniester river, Dana river-goddess of Vedas, Danu water-goddess near Dirrangan, Dani snake-god with Dirrangan. The Vedic snake which withheld rivers was a brahmin, so a "derwydd anghenfyn. druid-snake" of rivers is possible. Echidna draco-snake , daughter of Brettanos of Gaul, is linked with the source of the Danube. She seized cattle, like the goddess of the Boyne spring.
"Druid dru.vid" is not linked to any deity, but "dhur. vid" may be linked to "Dirrangan".
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