That the same tale can have more than one version in the telling is part of the glory and wonder of myths and legends.
Which account you find depends on where you look.

In the world of the Celts, one of the many functions of the Druids, in particular the class of Druids known as Bards, was to learn and pass on the history and stories of their people through the telling of the tales.
Through the words of a great bard, history came alive, leaving the listener spellbound.

It is believed that none of the Celtic tales were committed to written form until after the arrival of Christianity, and with it Latin.
Latin added to the confusion of the variety of accounts by creating some spelling problems and so you will also find multiple spellings of the same name or place in the various written accounts of the same tales.

There is an entire group of academics that devote their lifetimes to the archeology of language, and what linguistics can tell us about the development of a people.
They are having much fun trying to figure out the Celts.

But that is for another time.

Boann was a member of the Tuatha Dé Danaan, a race that eventually lived in the Otherworld, though they could pass freely between this world and the Otherworld.
Their many stories will not be told here.
Perhaps later.
Boann was the Goddess of the River Bóinne (Boyne).
She was married to Nechtán.
She was also consort to Elcmar.
She was also consort to the Dagda, know as the Good God.
When the Dadga met Boann, he sent Elcmar on a day-long errand.
When Elcmar left on his errand, the Dadga came to Boann in her bed.
From that union was born Aengus Mac Óg, the Celtic God of Love.
Due to the Dagda's magic, Elcmar's single day lasted nine full months.
Thus Aengus Mac Óg was conceived and born on the same day.

Near the dwelling place of Boann was a secret well which was the source of all knowledge and inspiration.
Nine hazels grew over the well, and dropped their nuts into the fountain.
Five salmon which were in the fountain severed the nuts and sent their husks floating down five streams.
These are the five streams of the senses through which knowledge is obtained.
This is also the well in which the Salmon of Knowledge was spawned.
That salmon swallowed the hazelnut of wisdom, and it was Fionn Mac Cumhaill who eventually ate the flesh of the Salmon of Knowledge.
Another tale for another time.

Boann had been warned by Nechtán not to test the power of the well.
But she was a prideful woman, and so, tempting fate, she walked three times counter-clockwise around the well.
Three waves rose out of the well, one carrying away her thigh, one carrying away her hand, and the third carrying away her eye.
Shamed by her disfigurement, she turned seaward, the waters of the well roaring behind her, until she reached the sea.
Overcome by the force of the waves as she reached the sea, she drowned.
And thus was the River Bóinne born.

Credits for the information above go to:
http://www.shee-eire.com
http://www.celt.net
The Celtic Realms – by Miles Dillon & Nora Chadwick
Heroes of the Dawn: Celtic Myth – by Fergus Flemming, Shahrukh Husain, C. Scott Littleton, Linda A Melcor, and Dr. John McInnes

It took me a while to begin to understand just why she speaks to my soul.
And I'm still learning.

I think it has to do with her curiosity combined with her rebellious streak.
A dynamite combination in every sense of the word.

A combination that I like to think I possess myself.

It's certainly been suggested that I carry one and sometimes both qualities.
Which I have always taken as a compliment, though I'm not sure it was always intended as such.