Question: When was father of the Carter Family born?

Context paragraphs:
Single Girl, Married Girl: Single Girl, Married Girl is a folk song made famous by The Carter Family, about the differences in lifestyle between the two title characters.  The song was originally released on Victor Records in 1928 as the a-side of Victor 20937, the Carter Family’s second 78-rpm record for the label.  It was recorded on August 2, 1927, the second day of their first session with producer and engineer Ralph Peer, and released in January 1928.  This version was later included in Harry Smith’s Anthology of American Folk Music, Vol.  3.  Notably, the song does not feature A.P. Carter, but is instead a duet between cousins Sara and Maybelle.

Ezra Carter: Ezra J. Carter (also known as Eck Carter) (1898–1975) was a member of the Carter Family of Virginia.  Ezra Carter managed the famous Carter Family, a traditional American folk music group that recorded between 1927 and 1956.  He was the husband of Maybelle Addington Carter (1909–1978), brother of Alvin Pleasant "A.P." Delaney Carter (1891–1960) and father of Helen Carter (1927-1998), June Carter (1929-2003) and Anita Carter (1933-1999).

Sunny Side of Life: Sunny Side of Life is a 1985 documentary film about the musical Carter Family focusing on the children of A.P and Sara who still live in the mountains and are trying to keep the legacy of their ancestors alive, at the Carter Fold near Maces Spring, Virginia.  It includes interviews with the clan including a small snippet with June Carter Cash.  The title is based upon the early Carter Family hit recording, "Keep On the Sunny Side" (1928).

Kenneth Jones (songwriter): Kenneth Jones (1952–1969), was the son of Helen Myrl Carter (of country music's Carter Family) and of Glenn Jones.  He is best remembered for a song he wrote called "Sing A Traveling Song" which appeared on Johnny Cash's albums "Hello, I'm Johnny Cash" and "Johnny Cash at Madison Square Garden".  Kenneth was Cash's nephew-in-law.  Cash's second wife, June Carter Cash, was Helen's sister.  Kenneth, or Kenny as he was also known, wrote many songs and was a talented musician.  At the time of his death he was under contract with Monument Records and appeared destined for a highly successful career.  Following his death the Carter Family recorded one of his songs, "2001 Ballad to the Future".  A few have noted the lyrics as being eerily prophetic of the September 11, 2001 terrorist attacks on the United States which took place more than thirty years after the song was written.

Wildwood Flower (album): Wildwood Flower is the last solo album from June Carter Cash.  It was released in 2003 on the Dualtone record label, four months after her death and only a few days before the death of Johnny Cash, who provides backing vocals, making this the final release of his lifetime.  It was produced by their son, John Carter Cash.  The album's opening track, "Keep on the Sunny Side" was a Carter Family anthem that June Carter Cash had previously recorded twice with Johnny Cash: for the 1964 Carter Family album of the same title, and for the 1974 Johnny Cash album "The Junkie and the Juicehead Minus Me".  "The Road to Kaintuck", written by June, had previously been recorded by her husband on several occasions for Columbia Records.  The medley of "Church in the Wildwood"/"Lonesome Valley" had been a regular part of Johnny Cash concerts in the 1970s.

Carter Family picking: Carter Family picking, also known as thumb brush' technique or the 'Carter lick,' and also the 'church lick' and the 'Carter scratch, is a style of fingerstyle guitar named after Maybelle Carter of the Carter Family's distinctive style of rhythm guitar in which the melody is played on the bass strings, usually low E, A, and D while rhythm strumming continues above, on the treble strings, G, B, and high E.  This often occurs during the break.  The style bears similarity to the frailing style of banjo playing and is the rhythm Bill Monroe adapted for bluegrass music two decades later.

A. P. Carter: Alvin Pleasant Delaney Carter (December 15, 1891 – November 7, 1960) professionally recording as A.P. Carter, was an American musician and founding member of The Carter Family, one of the most notable acts in the history of country music.

Janette Carter: Janette Carter (July 2, 1923 – January 22, 2006) was the last surviving child of A.P. and Sara Carter, of Carter Family musical fame.  In 1976, she and community members built an 880-seat amphitheater, the Carter Family Fold, beside the store her father operated in Southwestern Virginia.  Today, the Carter Family Fold attracts more than 50,000 visitors a year.  She had three children from her first husband: Donald William (deceased), Rita Janette, and James Delaney (Dale).  The surviving two reside in her hometown of Maces Spring, (Scott County) Virginia, which is nestled in Poor Valley at the foot of Clinch Mountain.  She was awarded the Bess Lomax Hawes NEA National Heritage Award in 2005 for her lifelong advocacy for the performance and preservation of Appalachian music.  In 2006 she died and was buried next to her mother, Sara Carter Bayes, and her brother at the Mount Vernon United Methodist Church Cemetery in Maces Spring.

Carter Family discography: This is a comprehensive discography of Carter Family, often cited as "the most influential group in country music history": (For recordings by the second generation of The Carter Family see The Carter Sisters.)

Carter Family Fold: The Carter Family Fold is a musical performance and concert venue located near Hiltons, Virginia.  It is dedicated to the preservation and performance of old time country and bluegrass music.  It is named in honor of the original Carter Family, A.P., Sara, and Maybelle, who were among the earliest recording artists in country music, with their first records on RCA Victor being released in 1927.  The Fold was founded by Janette Carter, daughter of A.P. and Sara Carter, in 1979.

Supporting paragraphs: Sunny Side of Life A. P. Carter
Answer: December 15, 1891