Lee Eastman, born Leopold Vail Epstein, (12 January 1910 - 30 July 1991) was a New York show business attorney, and art collector the son of Louis (b. Russia ~1887, imm. 1906) and Stella (Freyer) Epstein. His sisters were Emmaline and Rose. He married Louise Lindner, heiress to the Lindner Department Store fortune; they had four children, including John Eastman and Linda McCartney, the late wife of former Beatle Paul McCartney. Eastman became McCartney's business manager shortly before the breakup of The Beatles while his son John represented McCartney during his 1970 lawsuit to legally dissolve the Beatles. He is the maternal grandfather of potter Heather McCartney, photographer Mary McCartney, fashion designer Stella McCartney, and musician/sculptor James Louis McCartney. Eastman was also the friend and longtime lawyer for and collector of the works of the Abstract expressionist painter Willem de Kooning.

When the Beatles' company Apple Corps was in business trouble early in 1969, Eastman and Allen Klein were both considered to take the reins of the company, and of the band's careers. John Lennon favoured Klein. Lennon said he was impressed that Klein knew Lennon's lyrics, and understood them, and that Klein was very intelligent.George Harrison and Ringo Starr chose Klein, though Lennon said in 1970 that he maneuvered Klein into Apple. McCartney wanted Eastman, but was out-voted 3-1. For a short period, Klein managed Apple and the personal careers of Lennon, Harrison, and Starr while Eastman was the corporate counsel and managed McCartney. The Klein/Eastman combination did not work, and after a contentious meeting, Eastman was out. Subsequent disagreements over decisions made by Klein and the other Beatles prompted McCartney—represented by Eastman—to sue them to dissolve the partnership, and he eventually succeeded.

Lee Mack Ritenour (born January 11, 1952) is an American jazz guitarist who has recorded over 42 albums, appeared on over 3000 sessions, and has charted over 30 instrumental and vocal contemporary jazz hits since 1976. One of his most popular songs was the smash hit, “Is It You” in 1981. Ritenour is considered to be a pioneer in the Contemporary Jazz and jazz-funk genres of music.^{[citation needed]}. Guitar Player Magazine awarded him with a Lifetime Achievement Award for the year 2010. His highly acclaimed and popular 2010 hit album Lee Ritenour's 6 String Theory had numerous awards in 2011 including, Guitar Album of the Year – Guitar International Magazine. UK’s Guitarist Magazine: The #1 Best 50 Guitar Albums of 2010. JAZZIZ Magazine Publisher’s Album of the Year. Top Albums of 2010 from Canada’s “The Guardian”. Lee was awarded at the 2011 Echo Awards in Germany (the German Grammy awards) for Best International Instrumentalist (Guitar) in conjunction with the album, 6 String Theory)

Ritenour was born January 11, 1952 in Los Angeles, California. He played his first session when he was 16 with the Mamas & the Papas and given the moniker, "Captain Fingers", because of his manual dexterity on the guitar. Ritenour was a sought-after session guitarist by the mid-1970s, and won Guitar Player Magazine's Best Studio Guitarist twice in the 1970s. He is noted for playing his red Gibson ES-335 and his Gibson L5 guitars.

Sir James Paul McCartney, MBE, Hon RAM, FRCM (born 18 June 1942) is an English musician, singer-songwriter and composer. Formerly of the Beatles (1960–1970) and Wings (1971–1981), he has been described by Guinness World Records as "The Most Successful Composer and Recording Artist of All Time", with 60 gold discs and sales of over 100 million albums and 100 million singles. With John Lennon, George Harrison, and Ringo Starr, he gained worldwide fame as a member of the Beatles, and with Lennon formed one of the most celebrated songwriting partnerships of the 20th century. After leaving the Beatles, he began a solo career and later formed the band Wings with his first wife, Linda Eastman, and singer-songwriter Denny Laine.

According to the BBC, his Beatles song "Yesterday" has been covered by over 2,200 artists—more than any other song. Wings' 1977 release, "Mull of Kintyre", became one of the best-selling singles ever in the UK, and he is "the most successful songwriter" in UK chart history, according to Guinness. As a songwriter or co-writer, he is included on thirty-one number one titles on the Billboard Hot 100, and as of 2012 he has sold over 15.5 million RIAA certified units in the United States.

Linda Louise McCartney, Lady McCartney (née Eastman; formerly See; September 24, 1941 – April 17, 1998) was an American photographer, musician and animal rights activist. Her father and mother were Lee Eastman and Louise Sara Lindner Eastman.

In 1969 she married Beatle Paul McCartney and later joined McCartney's band Wings. In the same year McCartney adopted her daughter, Heather Louise, from her first marriage to John See. The McCartneys had three children together: Mary Anna, Stella Nina, and James Louis. She became Lady McCartney when her husband was knighted in 1997.

She wrote several vegetarian cookbooks, became a business entrepreneur (starting the Linda McCartney Foods company) and was a professional photographer, publishing Linda McCartney's Sixties: Portrait of an Era. McCartney was diagnosed with breast cancer in 1995, and died at the age of 56 on 17 April 1998 in Tucson, Arizona, where the McCartneys had a ranch.

Linda Louise McCartney was born Linda Louise Eastman, the second-eldest of four children, to Jewish-American parents in New York City. She had one older brother, John (10 July 1939), and two younger sisters, Laura (born 1947) and Louise Jr. (born 1950). She grew up in the wealthy Scarsdale area of Westchester County, New York and graduated from Scarsdale High School in 1959. Her father was the son of Jewish-Russian immigrants. He changed his name from Leopold Vail Epstein to Lee Eastman, and was not related to George Eastman of Eastman Kodak fame. He was songwriter Jack Lawrence's attorney, and at his request in 1942, Lawrence, while in the army, wrote a song called "Linda" in honor of the one-year-old. It was published in 1946, and recorded by Buddy Clark in 1947. John Eastman later became Paul McCartney's lawyer and manager, taking over from his father, Lee Eastman.

Edward "Monk" Eastman (1875 – December 26, 1920) was a New York City gangster who founded and led the Eastman Gang, which became one of the most powerful street gangs in New York City at the turn of the 19th/20th century. His aliases included Joseph "Joe" Morris, Joe Marvin, William "Bill" Delaney, and Edward "Eddie" Delaney. Eastman is considered to be one of the last of the 19th-century New York gangsters who preceded the rise of Arnold Rothstein and more sophisticated, organized criminal enterprises such as Cosa Nostra.

Monk Eastman's background is a subject of debate. City records show, as documented by crime authors such as Patrick Downey, Ron Arons, and Rose Keefe, that Monk was born Edward Eastman in 1875 in the rowdy Corlear's Hook section of lower Manhattan to Samuel Eastman, a Civil War vet and wallpaper-hanger, and his wife Mary Parks. By the time Monk was five, his father had abandoned the family. Mary moved with her children to her father George Parks' home on the upper east side.