Sources

Military	US Army Sgt. Charles T. Caldwell - http://www.militarycity.com/valor/256702.html US Army Spc. Nathaniel A. Caldwell - http://www.militarycity.com/valor/256683.html Reverend James Caldwell - http://en.wikipedia.org/wiki/James_Caldwell James Caldwell - Boston Massacre - http://theamericanrevolution.org/hevents/bmassacr.asp Lieutenant James R. Caldwell, USN - http://www.history.navy.mil/photos/pers-us/uspers-c/j-caldwl.htm Major General John C. Caldwell - http://en.wikipedia.org/wiki/John_C._Caldwell
Science	Dr. Tracy E. Caldwell - http://www.jsc.nasa.gov/Bios/htmlbios/caldwell.html
Literature	Erskine Caldwell - http://www.georgiaencyclopedia.org/nge/Article.jsp?id=h-497 - http://www.johnwade.com/biography.htm - http://id.mind.net/~fletch/ - http://www.dartmouth.edu/~montfell/biographies/a_f/caldwelle.html Taylor Caldwell - http://www.nationmaster.com/encyclopedia/Taylor-Caldwell - http://foia.fbi.gov/foiaindex/tcaldwell.htm Ian Caldwell - http://en.wikipedia.org/wiki/Ian_Caldwell
Entertainment	Toy Caldwell - http://music.yahoo.com/ar-256470-bio--The-Marshall-Tucker-Band Tommy Caldwell - http://www.tuckerhead.com/history_of_mtb.htm Bobby Caldwell - http://www.bobbycaldwell.com/biography.htm Kimblerly Caldwell - http://www.kimberly-caldwell.com/kim.html L. Scott Caldwell - http://www.cbs.com/primetime/queens_supreme/bio_lcaldwell.shtml
Politics
Infamous
Academia	Joseph Caldwell (1773 - 1835) UNC Chapel Hill - http://museum.unc.edu/get_page.html?chapter=1&slide=15 - http://docsouth.unc.edu/fpn/caldwell/bio.html Wilson Swain Caldwell - http://en.wikipedia.org/wiki/Wilson_Caldwell - http://www.ibiblio.org/cemetery/segregated/caldwell.html
Miscellaneous