Marcus D. Shackleford
- Born in Avon Park, Fl.
- Graduated from Hardee High School, Wauchula, Fl. 1963
- Graduated from Abraham Baldwin Ag College
- Graduated from University of Florida
- Taught at Zephyrhills High School, Zephyrhills, Fl. 1968-1973
- Taught at Hardee High School, Wauchula, Fl. 1973-1974
- Rancher - Self Employed
- State FFA Officer 1963
- University of Florida Judging Team
- President of American Brahman Association
- Cattle Judge USA and Latin America