Who are the name of the three men that where in the marx brothers groups?

There were actually 5, not 3 members of the Marx Brothers comedy troupe, however one member, Gummo Marks, was only part of the vaudeville act and never appeared in the troupe's movies.

The three most well known Marx Brothers were:

Chico Marx (born Leonard Marx on March 22, 1887 in New York City; passed away on October 11, 1961 at the age of 74 in Hollywood, California).

Harpo Marx (born Adolph Marx on November 23, 1888 in New York City; passed away on September 28, 1964 at the age of 75 in Los Angeles, California).

Groucho Marx (born Julius Henry Marx on October 2, 1890 in New York City; passed away on August 19, 1977 at the age of 86 in Los Angeles, California).

The two lesser known members were:

Gummo Marx (born Milton Marx on October 23, 1892 in New York City; passed away on April 21, 1977 at the age of 84 in Palm Springs, California).

Zeppo Marx (born Herbert Marx on February 25, 1901 in New York City; passed away on November 30, 1979 at the age of 78 in Palm Springs, California).

Right now a one-man comedy show is touring the country keeping the memory of Groucho alive. Comic Frank Ferrante's show is titled An Evening with Groucho.