question: When was Ellen Roosval Von Hallwyl's mother born?
context: [["Terence Robinson", ["Terence D. Robinson( date of birth and death unknown) was a male wrestler who competed for England."]], ["Franz Josef von Hallwyl", ["Franz Josef von Hallwyl, born 1719 in from Solothurn, son of lieutenant-colonel Abraham Gabriel von Hallwyl and Anna Franziska de Tayac, dead 1785 in Colmar, France, was a Swiss officer, marechal de camp in French service, colonel-proprietor of the Swiss regiment de Karrer.", "He married Marie Therese de Mydorge in 1757.", "Hallwyl was rewarded multiple times; becoming a knight of the Order of Saint Louis in 1745 for meritorious service in the battle of Fontenoy, a knight of the Polish Order of the White Eagle 1777, and a French count."]], ["Ebba von Eckermann", ["Ebba Johanna Cecilia von Eckermann n\u00e9e\" von Hallwyl\"( 21 May 1866 \u2013 16 October 1960) was a Swedish women's rights activist.", "Ebba von Eckermann was the daughter of Walther and Wilhelmina von Hallwyl and sister of Ellen Roosval von Hallwyl.", "She was a student of the\" Wallinska skolan\" in 1882- 84, and had the wish to continue to study architecture at the university; her parents, however, disagreed and wished for her to follow custom, and instead, she was introduced in high society to find a husband.", "In 1886 she married the noble officer and courtier Wilhelm von Eckermann.", "von Eckermann is known for the gatherings she hosted between educated women and working class women in her home: the purpose was for women from different classes to be acquainted and learn from each other.", "She was a central figure for the feminists and women's rights activists within more conservative right- wing circles.", "Ebba von Eckermann was a member of the board and vice chairperson of\" Fredrika- Bremer- F\u00f6rbundet\", a member of the board of the hospitals\" Sophiahemmet\" and\" Eugeniahemmet\", and engaged within the Red Cross and the\" Sveriges flickors scoutf\u00f6rbund( SFS)\"(' Swedish Girl Scouts'), and founded a household school( 1913).", "She co-founded the women's association\" Stockholms Moderata Kvinnof\u00f6rbund\"(' Moderate Women's Association of Stockholm'), which she chaired in 1912 \u2013 22, and co-founded the\" Sveriges moderata kvinnors riksf\u00f6rbund\"(' Swedish Moderate Women's Association') in 1915, which she chaired in 1915 \u2013 22."]], ["Pamela Jain", ["Pamela Jain is an Indian playback singer.", "Date of Birth:16th March."]], ["Theodred II (Bishop of Elmham)", ["Theodred II was a medieval Bishop of Elmham.", "The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997."]], ["Etan Boritzer", ["Etan Boritzer( born 1950) is an American writer of children \u2019s literature who is best known for his book\" What is God?\" first published in 1989.", "His best selling\" What is?\" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.", "Boritzer gained national critical acclaim after\" What is God?\" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.", "The other current books in the\" What is?\" series include", "What is Love?,", "What is Death?,", "What is Beautiful?,", "What is Funny?,", "What is Right?,", "What is Peace?,", "What is Money?,", "What is Dreaming?,", "What is a Friend?,", "What is True?,", "What is a Family?,", "What is a Feeling?\"", "The series is now also translated into 15 languages.", "Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.", "His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.", "Boritzer now lives in Venice, California and maintains his publishing office there also.", "He has helped numerous other authors to get published through\" How to Get Your Book Published!\" programs.", "Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.", "He is also recognized nationally as an erudite speaker on\" The Teachings of the Buddha.\""]], ["Les Richards", ["Les Richards( date of birth unknown) was an Australian rules footballer who played with North Melbourne in the Victorian Football League( VFL)."]], ["Brian Saunders (weightlifter)", ["Brian Saunders( date of birth and death unknown) was a male weightlifter who competed for England."]], ["Wilhelmina von Hallwyl", ["Countess Anna Fridrica Wilhelmina von Hallwyl, n\u00e9e Kempe (1 October 1844 \u2212 25 July 1930) was a Swedish collector and donor whose accumulation of art and other objects constitute the current Hallwyl Museum in Stockholm."]], ["Ellen Roosval von Hallwyl", ["Ellen Roosval von Hallwyl (1867-1952), was a Swedish painter, sculptor and composer.", "She was the daughter of Count Walther and Countess Wilhelmina von Hallwyl.", "She was a student of the Wallinska skolan.", "She married the courtier and diplomat Henrik de Mar\u00e9 in 1887 and was the mother of Rolf de Mar\u00e9, founder of the Ballets su\u00e9dois.", "After divorcing de Mar\u00e9 in 1906, Ellen married the art historian Johnny Roosval the year after.", "Roosval was twelve years her junior and her son's tutor, which created a scandal in Sweden.", "During the 1920s, she exhibited her sculptures at the Th\u00e9\u00e2tre des Champs-\u00c9lys\u00e9es.", "She was given the Litteris et Artibus in 1925."]]]
supporting_facts: [["Ellen Roosval von Hallwyl", 1], ["Wilhelmina von Hallwyl", 0]]
evidences: [["Ellen Roosval von Hallwyl", "mother", "Wilhelmina von Hallwyl"], ["Wilhelmina von Hallwyl", "date of birth", "1 October 1844"]]
answer: 1 October 1844