Title: The Sevenwaters Trilogy
Content: Daughter of the Forest ; Son of the Shadows ; Child of the Prophecy ; Heir to Sevenwaters ; Seer of Sevenwaters ; Flame of Sevenwaters The Sevenwaters Trilogy is a historical fantasy series by Juliet Marillier which was first published as a series of three novels between 1999 and 2001, and then later extended. The six novels are: 
Title: The Sevenwaters Trilogy
Content:  The novels are set in ninth-century Ireland and Britain.
Title: The Sevenwaters Trilogy
Content:  Set mainly in ancient Ireland, the series covers four generations in the family of Sevenwaters, which enjoys a special relationship with the people of the Otherworld. As well as battles between the Irish Celts and the Britons, internal conflicts between neighbouring landholders are integral to the plots. However, all six books carry a strong romance element. All the books are narrated in the first person by young women of the family.
Title: Son of the Shadows
Content:  Son of the Shadows is a historical fantasy novel by Juliet Marillier and the second book in the Sevenwaters Trilogy first published in 2000. It follows the path of Sorcha and Red's third child, Liadan, a girl who lives outside the pattern of the 'Fair Folk', also known as Túatha Dé Danann. Son of the Shadows won the 2001 Aurealis Awards for Fantasy Novel.
Title: The Sevenwaters Trilogy
Content:  Seer of Sevenwaters follows Sibeal's (pronounced Shi-bail) last summer on Inis Eala before she makes her final vows to become a druid and live in the forest of Sevenwaters in quiet meditation and solitude. What was meant to be a peaceful visit is quickly transformed as a shipwreck on a nearby reef sends three survivors to the island, including a mysterious amnesiac who Sibeal finds herself caring for. Their lives change when, together, they must embark upon a journey of self-discovery that will lead them far away and closer to each other.
Title: Child of the Prophecy
Content:  Child of the Prophecy is an historical fantasy novel by Juliet Marillier and the third book in the Sevenwaters Trilogy first published in 2001. Book Three steps slightly out of the tradition of Sevenwaters, with the young heroine Fainne being raised far from the homestead, in Kerry. Fainne is the daughter of Niamh and Ciaran, and is a dangerous combination of four races.
Title: The Sevenwaters Trilogy
Content:  "Heir to Sevenwaters" is the story of Clodagh (Klo-da), daughter of Sean and Aisling (Ash-ling), an obedient, selfless, and caring young woman. Clodagh shares a psychic mind-link with her twin sister Deirdre (Dair-dra), just as her father, Sean, shares with his twin Liadan. Though Clodagh isn't gifted as a seer or with magical abilities, she is perceptive to the Otherworldly beings that share the forest around her home, sometimes seeing things others can't. Clodagh's twin is being wed to a young nobleman, and Sevenwaters is filled with visitors, including the handsome Aidan, and his best friend and foster-brother, Cathal (Ka-hall), 
Title: The Sevenwaters Trilogy
Content:  A short story about Lady Oonagh's other son, Conri. For assisting in the rescue of Ciaran, he is turned into a raven until a woman of Sevenwaters agrees to marry him. After decades as Ciaran's familiar, his story wins the sympathy of Padriac's daughter, the fierce Aisha who is visiting for the first time from norseland Xixón. Ciaran performs the wedding, the curse is broken, and Conri returns to human form.
Title: The Sevenwaters Trilogy
Content:  Flame follows Maeve, one of Lord Sean's daughters, on her return to Sevenwaters after ten years away at Harrowfield. Burned in a horrible accident as a child, Maeve is reluctant to return to the place of so many difficult memories and expectations. Yet upon her return, she finds herself in the middle of a strange struggle, the heart of which lies in the Otherworld. And only Maeve and her little brother Finbar have the ability to save their family, their clan, and perhaps all of Erin.
Title: The Sevenwaters Trilogy
Content:  young men in her cousin's retinue. Aidan is the picture of a perfect future-husband; charming and caring, while Cathal is rude, insulting, and embarrassing to Aidan. Clodagh has other worries, however, with the prospect of parting with her twin sister, and her mother's unexpected and potentially dangerous pregnancy. While taking charge of the household in her mother's place, Clodagh discovers more and more about the two young guardsmen—and it turns out that neither one is as he seems. Trouble is brewing among the local nobility, and Clodagh struggles to make sense of some mysterious warnings she receives. After the birth 

Question: Who is the author of Sevenwaters Trilogy?
Answer: Juliet Marillier.