Mark Harmon actor, lately of NCIS

Mark Spitzer, swimmer

Matthew L. Spitzer    Director of the Searle Center on Law, Regulation, and Economic Growth

Mathew Kurtz, firearms expert

Matthew Modine - actor

Ruby Wylder Rivera Modine     American actress, singer --- and Matthew's daughter

Ruby Dee American Actress and Civil Rights Activist

Ruby May's, famous eatery

Karl Friedrich May -- was a German author

Karl Wallenda high wire performer and founder of the Flying Wallendas

Karl Marx, philosopher, economist, historian, sociologist, political theorist, journalist and socialist revolutionary

Heinrich Marx -- his daddy

The Marx Bros., Harpo, Chico, Zeppo, Groucho

The Smothers Brothers   Tom, Dick

The Brothers Four, Mike, Carl, Mark, and Bob, 60's era balladeers

Kieran Hebden (born Sept. 1977), best known by the stage name Four Tet

The Four Lads, connie, bernie, jimmie, frank.   Remember them?  https://www.youtube.com/watch?v=EWzdmOxwrkE

Hadn't heard of the Four Lads -- but now I have. Easy on the ears, good listening. So in that vein:

Concetta Rosa Maria Franconero:    Connie Francis
American pop singer, former actress, and top-charting female vocalist of the late 1950s

Francisco Martin, singer...

Samuel Denison Martin    singer

Dean Martin, singer, comedian

Martin David Fry    singer

David Nelson, ...rick's bro.

Rick Nelson    david's bro

Ozzie & Harriet, the parents

Following Ozzie and Harriet NELSON....

[/Nelson Mandelab]

Nelson Eddy

Nelson Gebhart, Post Lake Command

Kyra Gebhardt Nelson    realtor

Gaylord Nelson, WI  Governor