Question: Who is the father-in-law of Lady Rose Mclaren?

Knowledge 1: Lady Rose McLaren
Lady Rose Mary Primrose McLaren (21 July 1919 – 1 November 2005) was a British aristocrat, the fourth daughter of the 6th Marquess of Anglesey.The Paget family (the Marquesses of Anglesey) resided in Plas Newydd and Beaudesert in Staffordshire until the house was demolished in 1931, due to financial difficulties.Lady Rose Paget, as she was before her marriage, was the fourth of five daughters—her eldest sister Elizabeth and another sister, Caroline, shared the dark good looks of their mother (the former Lady Victoria Manners, eldest daughter of the 8th Duke of Rutland).Her brother was the 7th Marquess of Anglesey.Another of Paget's sisters, Mary, was brain-damaged, and Paget made herself responsible for her sister's welfare until her death in 1996.In her teens, Paget trained as a ballet dancer with Marie Rambert, and under the nameRose Bayly made her debut at Sadler's Wells in Swan Lake in 1937.After being largely educated at home, Paget led an unconventional life, being at different times a ballerina, a florist,
a land girl and a countrywoman.Twice engaged to the 8th Duke of Wellington, Paget eventually married Squadron Leader The Hon.John Francis McLaren, the second son of the 2nd Baron Aberconway in 1940.He died in 1953.The McLarens had two daughters, Victoria and Harriet.In her widowhood, McLaren became friends with Muriel Belcher (founder of the club, the Colony Room) and the artist Francis Bacon.At about this time McLaren established her florist's business, which operated from the basement of her house in Chelsea.Along with Pamela Forster (the daughter of Lord Forster of Harraby and a former employee of Constance Spry), they supplied the flowers for the wedding of Princess Margaret to Antony Armstrong Jones in 1960.McLaren left London in 1975 and returned to Wales, retiring to her house on the Bodnant Estate.In later life, McLaren held several prominent positions including County chairwoman of Macmillan Nurses, president of Conwy's Churchill Club and the president of the Eglwysbach Show.
McLaren died on 1 November 2005. [SEP] Knowledge 2: John Francis McLaren
John Francis McLaren (19 June 1919 – 23 March 1953) was a Royal Air Force officer.He was the younger son of Henry McLaren, 2nd Baron Aberconway and Christabel MacNaghten.
Knowledge 1: Lady Rose McLaren
Lady Rose Mary Primrose McLaren (21 July 1919 – 1 November 2005) was a British aristocrat, the fourth daughter of the 6th Marquess of Anglesey.The Paget family (the Marquesses of Anglesey) resided in Plas Newydd and Beaudesert in Staffordshire until the house was demolished in 1931, due to financial difficulties.Lady Rose Paget, as she was before her marriage, was the fourth of five daughters—her eldest sister Elizabeth and another sister, Caroline, shared the dark good looks of their mother (the former Lady Victoria Manners, eldest daughter of the 8th Duke of Rutland).Her brother was the 7th Marquess of Anglesey.Another of Paget's sisters, Mary, was brain-damaged, and Paget made herself responsible for her sister's welfare until her death in 1996.In her teens, Paget trained as a ballet dancer with Marie Rambert, and under the nameRose Bayly made her debut at Sadler's Wells in Swan Lake in 1937.After being largely educated at home, Paget led an unconventional life, being at different times a ballerina, a florist,
a land girl and a countrywoman.Twice engaged to the 8th Duke of Wellington, Paget eventually married Squadron Leader The Hon.John Francis McLaren, the second son of the 2nd Baron Aberconway in 1940.He died in 1953.The McLarens had two daughters, Victoria and Harriet.In her widowhood, McLaren became friends with Muriel Belcher (founder of the club, the Colony Room) and the artist Francis Bacon.At about this time McLaren established her florist's business, which operated from the basement of her house in Chelsea.Along with Pamela Forster (the daughter of Lord Forster of Harraby and a former employee of Constance Spry), they supplied the flowers for the wedding of Princess Margaret to Antony Armstrong Jones in 1960.McLaren left London in 1975 and returned to Wales, retiring to her house on the Bodnant Estate.In later life, McLaren held several prominent positions including County chairwoman of Macmillan Nurses, president of Conwy's Churchill Club and the president of the Eglwysbach Show.
McLaren died on 1 November 2005. [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: John Francis McLaren
John Francis McLaren (19 June 1919 – 23 March 1953) was a Royal Air Force officer.He was the younger son of Henry McLaren, 2nd Baron Aberconway and Christabel MacNaghten. [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: Henry McLaren