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Matthew Clairmont, also known as Matthew de Clermont and Matthew Roydon is a central character in the All Souls Trilogy and on A Discovery of Witches (TV series). He is also the love interest and eventual husband of Diana Bishop. He is a geneticist, Vampire, and fellow of All Souls College at the University of Oxford. In addition to working in his laboratory, Matthew enjoys reading books written by old friends and collecting wine.


Matthew's ampulla.

Matthew Clairmont was born in France around 500 AD. His biological father was a carpenter, as was Matthew when he grew up, before becoming a stonemason. When Matthew was young, he met a woman named Blanca. They were married when he was twenty five, and she was nineteen. After struggling to have children for many years, she gave birth to a son named Lucas. A fever came to their village in 536 and Matthew's wife and son did not survive. Matthew was devastated but continued to work on building a local church. One day, he decided to join Blanca and Lucas in the afterlife and jumped off the scaffold, Matthew shared this piece of information with Diana in the second book "A Shadow of Night" in the same church he built on the day of Lucas birth. Most don't know actually know the truth behind his death which led to his rebirth, Ysabeau de Clermont, the wife of Philippe de Clermont, offered Matthew an alternative to his impending death. Ysabeau made Matthew a vampire and soon he became a wrathful hunter. He learned to control his hunger from his father, Philippe. Matthew had made two vampires named Marcus and Benjamin.


A Discovery of Witches[]

Matthew Clairmont, a vampire, watches Diana Bishop, a witch, in the Bodleian Library in Oxford University, after hearing rumours she had called out a particular bewitched manuscript at Mabon. He introduces himself to her and is immediately captivated. However long-standing taboos between the species make Diana nervous around the vampire. Matthew eventually feels the urge to protect and watch over Diana, as a part of his vampire's instincts. Diana initially believes that he is responsible for the startling number of creatures that have been watching her since the encounter with Ashmole 782. He is shocked to learn that she has no idea why they are so interested in her and how she seems to push away her magic. Soon the secrets from Diana's past and her encounter with the Ashmolean manuscript begin to affect her daily life. Matthew intervenes and prevents the other creatures from threatening and bothering her. They begin to spend more time together discussing the mysterious bewitched volume and the origin of the creatures. Diana starts to develop feelings for Matthew. After Diana experiences a series of threats in Oxford, Matthew takes her to Sept-Tours, his mother's home in France. 

The Congregation- a council of nine supernatural species, three from each creature family, threaten Matthew's union with Diana as they traipse the boundaries of the covenant, an age old promise all creatures are bound by to never interfere in religion, politics or fraternise amongst species.Soon after, he returns to Oxford to deal with a break in at his laboratory, leaving Diana at Sept-Tours. When Matthew returns to Sept-Tours after a few days, they embrace and kiss. Matthew's vampire mother, Ysabeau, explains to Diana that the action was an oath regarding their relationship. Diana is then accepted as a daughter by Ysabeau, an act of betrayal to witches. Diana is from this point seen as Matthew's wife, as the admissions of love declared them mated in the eyes of vampires. Diana is then abducted from Sept-Tours and imprisoned in La Pierre by a witch on the Congregation, Satu Jårvinen. With reluctant help from Baldwin, he brings her back to safety at Sept-Tours. Matthew then takes Diana back to her home in Madison, New York to her aunts, Sarah and Emily. They begin to speculate and discover her powers and why they have been acting up. Amidst this, Juliette Durand pays a visit to Matthew at the behest of Gerbert of Aurillac, nearly killing him when he is saved by Diana's witchfire. He loses a lot of blood at which point he drinks from Diana. Matthew and Diana then decide, their best choice is to timewalk to the past to escape the Congregation's wrath and understand the extent of Diana's power. 

Shadow of Night[]

This portrait miniature by Nicholas Hilliard (1547 – 1619) was Deborah Harkness's inspiration for the character, Matthew Clairmont.

Diana Bishop and Matthew Clairmont timewalk back to the Elizabethan era, arriving at the Old Lodge. Their first encounter is with Matthew's closest friend, Christopher "Kit" Marlowe. Soon afterward, Diana discovers that Matthew is Matthew Roydon, a member of the famous School of Night. They encounter the entire group, plus others (Gallowglass, Hancock, Jack Blackfriars, Annie Undercroft, etc.). Diana becomes pregnant with Matthew's child, but miscarries, leading Matthew to avoid physical intimacy with her for quite some time. They go to Prague and meet the Holy Roman Emperor, and search for the Book of Life (previously called Ashmole 782, the magical manuscript that Diana encountered in the Bodleian that started all this). They find it, but do not have time to study it, before Edward Kelley, a daemon, tears out the 3 pages that are missing from the manuscript in the present. After they make up, their relationship is stronger than ever. Diana becomes pregnant again, they leave the past and timewalk back to the future. There, they meet up with Ysabeau and everyone else at Sept-Tours. Ysabeau finds out that Diana is pregnant with twins after hearing the two heartbeats, and they find out that one of the family is dead at the hands of the Congregation.

The Book of Life[]

Matthew and Diana arrive back at Sept-Tours from timewalking in the past. Matthew takes care of Diana while she is grieving for her Aunt Emily who has died while they were away. Matthew and Gallowglass discuss that Diana's magical power has increased in the past months. Matthew struggles to keep his blood rage sickness under control. Matthew tells Marcus that to protect the family from the Congregation, the head of the de Clermont family, his older brother Baldwin, forbade Matthew from seeking vengeance against Gerbert and Knox when they earlier facilitated a Congregation witch's torture and interrogation of Diana.

Matthew feels peaceful when he returns to sleeping Diana. He reflects that he always wanted a wife and children. He makes love with her, wanting the feeling of her safety and their intimacy to last forever. Thinking of how Emily died while Diana was away, Diana asks Matthew to never leave her without saying good-bye. He promises.

Marcus discovers the old family pedigrees, that his vampire father, Matthew, has a disowned vampire son, Benjamin, and that Matthew and Benjamin have blood rage sickness. Matthew reveals the circumstances in which Benjamin was made. Marcus finds out that if Matthew branches off from the de Clermonts as a scion, they can get out from under Baldwin's control as head of the de Clermonts, but Matthew is skeptical.

Diana and Matthew go to Chris Roberts' Yale lab to seek to discover information on creature genetics, Ashmole 782, and vampire blood rage. Matthew agrees to try to obtain the support of the other close relatives to form his own scion, while Diana stays safely away from him, looking for the missing page from Ashmole 782. Their separation would be incredibly difficult for both of them. Matthew goes to New Orleans to persuade and threaten Marcus' vampire children so they will join Matthew's new scion branch of the family.

Matthew returns to Diana's side after he learns she may be sick, and he and Jack give her a present they built together. Soon after, she gives birth to their twins. While she is laboring, Matthew tells her that to every question he ever had or will have, she is the answer. Ysabeau gives Diana and Matthew a grand house in Limousin, France called Les Revenants, so they can spend time with the twins there as a family. They look in Philippe's personal papers for information about the early days of the Congregation, vampire-witch hybrid children, Benjamin's past activities, and about The Book of Life. Matthew discovers a letter that implies that Benjamin may be in Central Europe. Matthew tells Diana he wants to "grow old" with her.

Matthew goes to the Chelm area of Poland, allowing himself to be captured and tortured by Benjamin. He finds a way to communicate to his family where he is and that Diana and others should help him. Matthew's family rescues him, Benjamin (and Peter Knox) are killed, and Matthew spends a long time recovering from the injuries Benjamin inflicted. Matthew resumes researching with Chris Roberts, Miriam and Marcus in Chris' lab, preparing to reveal someday the genetic basis of creatures as part of human evolution.

Matthew and Diana discuss the birthday party coming up to celebrate the date of Matthew's rebirth as a vampire. They see Jack's new painting of them, Diana realizing that a willingness to change is the secret of survival, and that the combination of their opposite characteristics makes them both stronger. Diana and Matthew were the tenth knot, unbreakable. without beginning or end.

TV series[]

Matthew is a complex knot of contradictory impulses and desires. A poet, a healer, a scientist, a spy, a warrior, an assassin; all of these titles have belonged to Matthew over the course of his very long life. He has several vulnerabilities, including his anger, arrogance, and a profound quest for redemption and forgiveness. At one moment a dangerous and deadly fighter, he is at the same time nurturing and protective, a gentle man who yearns to be a father and have a family of his own. Matthew has loved many women and is a faithful, somewhat obsessive lover. But he never mated… Until he met Diana Bishop.[1]


A Discovery of Witches Season 1[]

A Discovery of Witches Season 2[]

A Discovery of Witches Season 3[]