Was named, as The Marx Brothers, the #20 Greatest Actor on The 50 Greatest Screen Legends List by The American Film Institute.

Father of Arthur Marx, Miriam Marx, and Melinda Marx.

Came fifth in a Channel Four (UK) poll in 2005 to find the all-time favourite comedians' comedian.

Son of Sam Marx

Great-uncle of Gregg Marx, Laura Guzik and Brett Marx

Was a big fan of Gilbert & Sullivan operettas and used to stage Gilbert & Sullivan sing-along evenings at his home. During the 1950s, he appeared as Ko-Ko on NBC-TV in an acclaimed abridged version of "The Mikado."

He was portrayed by Lewis J. Stadlen in the Broadway show "Minnie's Boys," which ran an at the Imperial Theatre for 80 Performances from Mar 26 to May 30, 1970. Stadlen won a 1970 Theatre World Award for his performance.

Long-time companion of Erin Fleming.

His father was a tailor.

Brother-in-law of Barbara Marx, Susan Fleming and Dee Hartford

Was good friends with rock star Alice Cooper, often inviting him over at 11:00 pm to watch TV. A drawing of Groucho can also be seen on the cover of "Alice Cooper's Greatest Hits" album. In 1978, when the original giant white letters of the famous "HOLLYWOOD" sign were auctioned off in order to raise money for new replacement letters, Alice bought an "O" in memory of Groucho.

Father-in-law of Sean Berti

In the Broadway play "A Day in Hollywood--A Night in the Ukraine," which opened on May 1, 1980, and closed on Sep 27, 1981 (for 588 performances), a Groucho-type character, Moscow lawyer Serge B. Samovar, was played by David Garrison.

He was voted, as one of The Marx Brothers, the 62nd Greatest Movie Star of all time by "Entertainment Weekly".

Brother of Harpo Marx, Chico Marx, Gummo Marx and Zeppo Marx.

Was a close friend of "The Exorcist" author William Peter Blatty.

Nephew of actor Al Shean.

Uncle of Maxine Marx, Bill Marx and Bob Marx

Grandfather of actress Jade Marx-Berti.

When he died in 1977, he left an estate valued at $2 million.

He came to regret never going beyond grammar school. To compensate, he became a voracious reader in adulthood.

His son Arthur Marx was once smoking a corncob pipe in his room when he heard his father coming down the hall. In a panic, he stuffed the still-lit pipe into a drawer. Groucho came in, sniffed the air and left without a word. A moment later he was back with a briar pipe and a pouch of tobacco. "This will be better than that corncob you`re using," he said. Arthur asked if his father was angry and Groucho said, "Nonsense. Smoking won`t hurt you. I`ve been smoking for years, and aside from the fact that I feel terrible all the time it hasn`t hurt me, either!".

Was in attendance at The Beatles 1964 Hollywood Bowl concert, and there is existing footage of him applauding.

Knew Charles Chaplin during his vaudeville days.

The famous phrase "Well, who you gonna believe, me or your own eyes?" is often referred to as a Groucho quote, but it was actually delivered by Chicolini (Chico Marx) in Duck Soup (1933) while impersonating Rufus T. Firefly (Groucho).

The success of the Marx Brothers at MGM was due to the genius of Irving Thalberg. Upon his untimely death, the quality of their films declined mainly because studio chief Louis B. Mayer did not care for them or their act.

Carried on extensive correspondence with such literary giants as T.S. Eliot and Carl Sandburg. He also was well-known for attaching a hilarious P.S. to his most serious letters. According to Dick Cavett, Groucho added this P.S. to a lengthy account of his memories of Charles Chaplin from vaudeville days: ""Did you ever notice that Peter O`Toole has a double-phallic name?"

His cremated remains are entombed at Eden Memorial Park, San Fernando, California, USA.

Was intended to make a joke on the set of William Friedkin`s The Exorcist (1973) by appearing in Father Merrin`s clothes when Ellen Burstyn opened the door. However, the idea was dropped due to scheduling conflicts.

Was never much of a womanizer in real life (as were his older brother, Chico Marx & Harpo Marx), having joked later in life about his disastrous attempts at courting as a young man.

Was the quiet, introverted middle brother of 5, and suffered the middle sibling condition. He never got as much attention as his older brothers (Chico Marx & Harpo Marx), who were wild and charming, or his two younger brothers (Zeppo Marx & Gummo Marx), who were cuter. The plus side of this outsider status was that he developed a cutting wit to get attention.

His double album "An Evening with Groucho" (A&M: 1972), recorded at a sold-out performance at Carnegie Hall, was a suprise best-seller and a Grammy nominee for Best Comedy Recording. His accompanist on that occasion was the then unknown Marvin Hamlisch.

Smashed a violin onstage at Carnegie Hall, in a mock "tribute" to Jack Benny.

There`s a famous club in London called the Groucho, frequented by actors and celebrities. It got its name from the famous Groucho quote that he would not join any club that would accept him as a member.

In 1989, the Republic of Abkhazia (in the former Soviet Georgia) proclaimed independence. To show the world they were rejecting their Communist past, they issued two postage stamps of Groucho Marx and John Lennon (as opposed to Karl Marx and V.I. Lenin).

At the time of his death he was not aware that his brother Gummo Marx had passed away four months earlier. His family believed that it was a kindness not to tell him.

Groucho`s show "You Bet Your Life" (on radio from 1947 to 1956 over ABC, CBS, and finally NBC) was inducted into the Radio Hall of Fame in 1988.

In the 1950s Groucho was invited to take a tour of the New York Stock Exchange. While in the observation booth, he grabbed the public address system handset and began singing "Lydia the Tattooed Lady". Upon hearing silence coming from the trading floor, he walked into view, was given a loud cheer by the traders, and shouted, "Gentlemen, in 1929 I lost eight hundred thousand dollars on this floor, and I intend to get my money`s worth!" For fifteen minutes, he sang, danced, told jokes, and all this time, the Wall Street stock ticker was running blank.

George Fenneman, Groucho`s announcer on "You Bet Your Life" (1950), was once asked if Groucho ever embarrassed him on the air. "Each and every show," Fenneman replied.

There are at least two versions of how Julius Henry Marx got his more famous nickname. One is that it came from his general disposition. The other, that, during the Marx Brothers` early days in vaudeville, he was the keeper of the act`s "grouch bag" or money purse. Groucho, himself, said, on one occasion, "my own name, I never did understand."

A famous gag toy was modeled after his face - the dark black glasses with big orange nose and mustache "disguise" toy.

Shortly after his death, his children found a gag letter written by Groucho that stated that he wanted to be buried on top of Marilyn Monroe.

The FBI had a file on him after he made some jokes about communism.

He suffered from insomnia, which he claimed was due to a financial loss in the stock market. When he suffered from insomnia, he used to call people up in the middle of the night and insult them.

Had a fifth brother, Gummo Marx, who performed with the other brothers in vaudeville. He left the act before the brothers started to make movies. He remained close to Groucho for the rest of his life.

Once during the run of "I`ll Say She Is" (the brothers` first Broadway play), his brother Harpo Marx tried to play a practical joke on him by chasing a chorus girl onto the stage while Groucho was in the middle of his act. Not to be outdone, he simply pulled out his watch and said "The Five Fifteen is right on schedule".

When talking about Margaret Dumont, the actress who frequently played the dowager who acted as a punching bag for Groucho`s verbal insults, he claimed the secret to their chemistry is that she never understood what he was saying.

Died three days after Elvis Presley. Unfortunately, due to the furor over the former`s death, the media paid little attention to the passing of this comic genius.

He was to have played the title role in a TV movie of L. Frank Baum`s "The Magical Monarch of Mo" with a teleplay by Gore Vidal, which was never produced.

Was told by studio executive Walter Wanger to lose the greasepaint moustache as it was an "obvious fake". (Source: Joseph Adamson III in his book Groucho, Harpo, Chico and sometimes Zeppo (1973)

In Marx Brothers movies, he almost always played characters with unusual first names, a middle initial and unlikely last names; i.e.: Rufus T. Firefly, Hugo Z. Hackenbush and Otis B. Driftwood.

He is best known for playing characters who were wisecracking sharpies who always sported a cigar, a mustache made of dark greasepaint and walked with a half crouch.