Question: Who is the father-in-law of Deuteria?

Knowledge 1: Deuteria
Deuteria or "Deoteria" (fl. 540), was a Frankish Queen consort; the first spouse of king Theudebert I.Deuteria belonged to an aristocratic Gallo-Roman family from Auvergne and was a relation to Sidonius Apollinaris, Saint Avitus and Emperor Avitus.She was living in Septimania, married and had a daughter, Adia, when the area was attacked by Theudebert I in 533.He fell in love with her, and when he became king the same year, he sent for her.She left her husband but brought her daughter with her to court, where she and Theudebert became lovers.At this point, her husband was still alive and Theudebert was engaged to Wisigard, a Lombard princess.It has never been confirmed whether the couple ever performed a wedding ceremony or not.Theudebert continued to be engaged to Wisigard, and Deuteria is sometimes called a concubine, but Deuteria is almost without exception referred to as Queen, despite this insecurity.According to Gregory of Tours, in 536 Deuteria had her daughter drowned in fear of her becoming a rival over Theudebert.After the murder, the aristocracy had Theudebert expel Deuteria from court and forced him to marry Wisigarde.It is said that he wished to recall Deuteria after Wisigard's death in 540, but did not dare to. [SEP] Knowledge 2: Theudebert I
Theudebert I  (c. 503 – 547 or 548) was the Merovingian king of Austrasia from 533 to his death in 548.He was the son of Theuderic I and the father of Theudebald.
Knowledge 1: Deuteria
Deuteria or "Deoteria" (fl. 540), was a Frankish Queen consort; the first spouse of king Theudebert I.Deuteria belonged to an aristocratic Gallo-Roman family from Auvergne and was a relation to Sidonius Apollinaris, Saint Avitus and Emperor Avitus.She was living in Septimania, married and had a daughter, Adia, when the area was attacked by Theudebert I in 533.He fell in love with her, and when he became king the same year, he sent for her.She left her husband but brought her daughter with her to court, where she and Theudebert became lovers.At this point, her husband was still alive and Theudebert was engaged to Wisigard, a Lombard princess.It has never been confirmed whether the couple ever performed a wedding ceremony or not.Theudebert continued to be engaged to Wisigard, and Deuteria is sometimes called a concubine, but Deuteria is almost without exception referred to as Queen, despite this insecurity.According to Gregory of Tours, in 536 Deuteria had her daughter drowned in fear of her becoming a rival over Theudebert.After the murder, the aristocracy had Theudebert expel Deuteria from court and forced him to marry Wisigarde.It is said that he wished to recall Deuteria after Wisigard's death in 540, but did not dare to. [SEP] Knowledge 2: Barthold A. Butenschøn Sr.
Hans Barthold Andresen Butenschøn( 27 December 1877 – 28 November 1971) was a Norwegian businessperson.He was born in Kristiania as a son of Nils August Andresen Butenschøn and Hanna Butenschøn, and grandson of Nicolay Andresen.Together with Mabel Anette Plahte( 1877 – 1973, a daughter of Frithjof M. Plahte) he had the son Hans Barthold Andresen Butenschøn Jr. and was through him the father- in- law of Ragnhild Butenschøn and grandfather of Peter Butenschøn.Through his daughter Marie Claudine he was the father- in- law of Joakim Lehmkuhl, through his daughter Mabel Anette he was the father- in- law of Harald Astrup( a son of Sigurd Astrup) and through his daughter Nini Augusta he was the father- in- law of Ernst Torp.He took commerce school and agricultural school.He was hired in the family company N. A. Andresen& Co, and became a co-owner in 1910.He eventually became chief executive officer.The bank changed its name to Andresens Bank in 1913 and merged with Bergens Kreditbank in 1920.The merger was dissolved later in the 1920s.He was also a landowner, owning Nedre Skøyen farm and a lot of land in Enebakk.He chaired the board of Nydalens Compagnie from 1926, having not been a board member before that.He also chaired the supervisory council of Forsikringsselskapet Viking and Nedre Glommen salgsforening, and was a supervisory council member of Filharmonisk Selskap.He was a member of the gentlemen's club SK Fram since 1890, and was proclaimed a lifetime member in 1964.He was buried in Enebakk.
Knowledge 1: Theudebert I
Theudebert I  (c. 503 – 547 or 548) was the Merovingian king of Austrasia from 533 to his death in 548.He was the son of Theuderic I and the father of Theudebald. [SEP] Knowledge 2: Barthold A. Butenschøn Sr.
Hans Barthold Andresen Butenschøn( 27 December 1877 – 28 November 1971) was a Norwegian businessperson.He was born in Kristiania as a son of Nils August Andresen Butenschøn and Hanna Butenschøn, and grandson of Nicolay Andresen.Together with Mabel Anette Plahte( 1877 – 1973, a daughter of Frithjof M. Plahte) he had the son Hans Barthold Andresen Butenschøn Jr. and was through him the father- in- law of Ragnhild Butenschøn and grandfather of Peter Butenschøn.Through his daughter Marie Claudine he was the father- in- law of Joakim Lehmkuhl, through his daughter Mabel Anette he was the father- in- law of Harald Astrup( a son of Sigurd Astrup) and through his daughter Nini Augusta he was the father- in- law of Ernst Torp.He took commerce school and agricultural school.He was hired in the family company N. A. Andresen& Co, and became a co-owner in 1910.He eventually became chief executive officer.The bank changed its name to Andresens Bank in 1913 and merged with Bergens Kreditbank in 1920.The merger was dissolved later in the 1920s.He was also a landowner, owning Nedre Skøyen farm and a lot of land in Enebakk.He chaired the board of Nydalens Compagnie from 1926, having not been a board member before that.He also chaired the supervisory council of Forsikringsselskapet Viking and Nedre Glommen salgsforening, and was a supervisory council member of Filharmonisk Selskap.He was a member of the gentlemen's club SK Fram since 1890, and was proclaimed a lifetime member in 1964.He was buried in Enebakk.

Answer: Theuderic I