Question: What year was the woman nicknamed "Baby", who worked at Grace's Little Belmont in the 1950's, born?

Context articles: El Mirón Cave
Pretty Baby (1950 film)
Elvera Sanchez
Andy Belmont
Grace's Little Belmont
Arthur Avenue
Lara Belmont
George Conway
Wonder Gardens
Robert Grace

The El Mirón Cave is a large cave in the upper Asón River valley towards the eastern end of Cantabria in northern Spain, near the border of the Basque Country.
 It is an archeological site in Ramales de la Victoria.
 It is known for a skeleton belonging to a woman nicknamed The Red Lady of El Mirón.
 She is estimated to have died around 18,700 years ago, during of Upper Paleolithic (Magdalenian).
 The skeleton is examined to that of someone between 35 and 40 years.
 Her bones were coated with ochre, a red iron-based pigment, hence, her name.
Pretty Baby is a 1950 American comedy film starring Dennis Morgan, Betsy Drake, Zachary Scott and Edmund Gwenn.
 A young woman's little white lie leads to unforeseen complications.
 Cary Grant aggressively promoted Betsy Drake, his wife, to Jack L. Warner for the lead in "Pretty Baby".
Elvera Sanchez (September 1, 1905 – September 2, 2000) was an American dancer and the mother of Sammy Davis Jr.
Andy Belmont (born November 20, 1957 in Langhorne, Pennsylvania) is a retired stock car driver and team owner.
 Belmont began racing at an early age before moving south.
 In 1987, he was named the NASCAR Dash Series Rookie of the Year, then he won the championship the next year as a car owner.
 Belmont posted three wins in the DASH Series (currently known as ISCARS DASH Touring since 2005) at Hickory Motor Speedway on October 18, 1987, Myrtle Beach Speedway on May 20, 1988, and Southside Speedway on July 8, 1988.
Grace's Little Belmont was a jazz music bar and lounge in Atlantic City, New Jersey.
 Located at 37 Kentucky Avenue, it was one of the four popular black nightclubs situated on that street between the mid-1930s and mid-1970s; the others were Club Harlem, the Paradise Club, and the Wonder Gardens.
 The Little Belmont was located across the street from Club Harlem, with which it often shared performers and patrons.
 Wild Bill Davis and his swing and jazz quartet were featured summer performers from 1950 through the mid-1960s, and Elvera M. "Baby" Sanchez, mother of Sammy Davis, Jr., worked at the bar.
 The club closed in the mid-1970s and was later demolished.
Arthur Avenue is a street in the Belmont section of the Bronx, New York City's northernmost borough.
 It is the heart of the Bronx's "Little Italy".
 "Little Italy" generally refers to Arthur Avenue and East 187th Street.
 Although the historical and commercial center of Little Italy is Arthur Avenue itself, the area stretches across East 187th Street from Arthur Avenue to Beaumont Avenue, and is similarly lined with delis, bakeries, cafes and various Italian merchants.
 Unlike the "Little Italy" neighborhood in Manhattan, which has become commercialized as a major tourist destination, the Bronx's "Little Italy" is considered "The real Little Italy" due to its Italian immigrant heritage which dates back to the 1950s.
 Arthur Avenue and Morris Park are viewed as the Bronx's primary Italian American communities.
 Other Italian American communities in the Bronx are the middle and upper class neighborhoods of Schuylerville and Country Club.
 The avenue itself is named for former U.S. president Chester A. Arthur.
Lara Belmont (born 1980 in Oxford, Oxfordshire) is an English actress, most famous for her role as Jessie in the 1999 film "The War Zone".
 She also appeared in ITV's lavish costume drama "Henry VIII" as his eldest daughter Mary Tudor.
 Belmont worked as a model before she was spotted in the street by a casting director.
George H. Conway (?
-1939) was a Triple Crown-winning American horse trainer who worked at Glen Riddle Farm in Berlin, Maryland.
 He is best known for training War Admiral, who won the Triple Crown in 1937 and was selected as the American Horse of the Year over his nephew and competitor Seabiscuit.
 Other notable horses trained by Conway include American Flag, who won the Belmont Stakes in 1925 before training with Conway, Crusader, who won the 1926 Belmont Stakes with Conway, and War Relic, who was the last horse that Conway trained.
Wonder Gardens (also known as Wonder Bar) was a jazz and R&B nightclub at 1601 Arctic Avenue in Atlantic City, New Jersey.
 Established around 1929, it was one of four black-owned nightclubs in the black entertainment district on Kentucky Avenue.
 Between the Wonder Gardens, Club Harlem, the Paradise Club, and Grace's Little Belmont, the music played all night and into the morning in the district's heyday in the 1940s through 1960s.
 Presenting both popular jazz musicians and new talent, the Wonder Gardens provided early exposure for Dan Fogel, Harvey Mason, George Benson, and the Commodores.
 Over the years, the music changed from jazz to rock, soul, and pop music.
 In 1979 the club was renovated, redecorated and renamed the Latin Wonder Gardens, featuring live Afro-Cuban musical entertainment.
 In 1991 it underwent a second renovation and name change to the New Wonder Gardens, featuring Latin, jazz, R&B, hiphop, and reggae acts.
 The club was sold in 2001 and was later demolished.
Grace was a descendant of the seventeenth-century Richard Grace, whose father, also named Robert Grace, was a feudal Baron of Courtstown.
 His ancestors had accompanied the Earl of Pembroke in an invasion of Ireland in the later part of the 12th century.
 They acquired extensive lands in Kilkenny County of Ireland and the family flourished there for more than 500 years.
 They then lost their lands in the Glorious Revolution of 1688.
 Some of the Grace families followed the exiled James II of England to France and others became soldiers of fortune.
 Grace's father was one of the latter and eventually ended up on an estate in Barbados.
 In 1707 he came to Philadelphia to live for a while.
 During this time, Grace was born in the city on April 25, 1709.
 His mother died while he was a baby and his father went back to Barbados and lived out his life there.
 Grace was raised by his maternal grandmother.
 Her name was Constance and she was married to Hugh Lowden, a wealthy merchant.
 Grace grew up in their Philadelphia mansion on High Street.