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College of Arts and Sciences

Dean's Leadership Council


The College of Arts and Sciences is privileged to have the leadership and commitment of its Dean's Leadership Council. The Council's mission is to foster a vital relationship between the College and the community that it serves. The College is honored that the following individuals have given at least $2,000 per year to the College and have committed to serving the Arts and Sciences with their time and their talent:

  • Leinesa D. Adams - CEO GrowthSpring Enterprises
  • Jack Allen, Jr. – Real Estate Broker and Land Developer
  • Juliette Cascone Gredenhag* – Educator and Community Advocate
  • Niall Falloon* – Retired Entrepreneur
  • Sheila Hickson-Curran – Medical Safety Officer, Johnson & Johnson Vision Care
  • Jessica Lee* – Environmental Scientist
  • Katie LeMaster – Retired Nurse and Social Worker, Mayo Clinic
  • Janice Machin – Retired Nurse and Adjunct Professor of Art History
  • Shiv Mahadevan – Senior Research Fellow, Materials Discovery, Johnson & Johnson Vision Care, Inc.
  • Dr. Rebecca Marcon – UNF Professor Emerita of Psychology
  • Christina McIntosh* – Local Realtor and team leader for ENGEL & VÖLKERS Jacksonville
  • Rhodes Robinson – CEO, Environmental Services, Inc.
  • Bob Tonsfeldt – Retired Business Executive

 * UNF Alumni

Leinesa D. Adams

Occupation:  CEO GrowthSpring Enterprises

John J. “Jack” Allen

Occupation: Jack has been a commercial real estate broker and land developer in Florida for over 30 years, first with a national firm and then with his own company Allen Land Group, Inc., which he started in 1994. Prior to that Jack was a corporate banking officer with the Holding Company of Barnett Bank.

Education:  Bachelor of Science in Agricultural Economics, Cornell University

Personal:  Jack is the founder of the “guys4GIRLS” Initiative and is active with a number of girl and women service organizations in northeast Florida. He is the recently elected new Chair of the University of North Florida Financing Corporation and has been an active UNF supporter through the Boards of the University of North Florida Foundation and the Museum of Contemporary Art Jacksonville, and other UNF initiatives and organizations. Both of Jack’s children are UNF alumni having received their undergraduate degrees from the University.

Juliette Cascone Gredenhag

Occupation: Educator and Community Advocate

Niall Falloon

Occupation: Educator and Community Advocate

Sheila Hickson-Curran 

Occupation: Medical Safety Officer, Johnson & Johnson Vision Care

Education:  City University London, Bsc(Hons), Optometry & Vision Science; British College of Optometrists, MCOptom, Optometric ;Diplomate, Section on Cornea, Contact Lenses and Refractive Technologies, American Academy of Optometry

Personal:  For the last 14 years, Sheila and her family have called Ponte Vedra Beach home.

Jessica Lee

Occupation:  Environmental Scientist

Katie LeMaster  

Occupation:  Retired Nurse and Social Worker, Mayo Clinic

Education:  Master of Social Work, Florida State University; Bachelor of Science, Social Work, Florida State University; Associate of Science, Nursing, Florida State University

Personal:  Katie is a retired U.S. Navy Social Worker and currently works as a Registered Nurse at the Mayo Clinic. Her board affiliations have included the National Association of Social Workers, Catholic Charities, St. Johns County Historic Resource Board, and the Board of the Mental Health Resource Center. Katie is a 1990 graduate of Leadership Jacksonville.

Janice Machin

Occupation:  Retired UNF adjunct faculty member and former nurse

Education:  Bachelor of Art, Public Affairs; Master of Art, Art History- Ancients

Personal:  Janice taught as a faculty member in UNF’s Department of Art and Design from 2004-2011. Her key areas of interest are ancient studies and art history. Janice also maintained her registered nurse licenses in Ohio, New Jersey, and Florida.  Janice is married to Bob Machin and has a daughter, Kristen, who is a children’s book author.  

Shiv Mahadevan  

Occupation: Senior Research Fellow, Materials Discovery, Johnson & Johnson Vision Care, Inc.

Education:  Doctor of Philosophy in Chemistry, 1996 -Tulane University, New Orleans, Louisiana, USA; Master of Business Administration, 1991 - University of Memphis, Memphis, Tennessee, U.S.A.; Master of Science in Chemistry, 1989 - Tulane University, New Orleans, Louisiana, USA; Bachelor of Science in Chemistry, 1985 - University of Madras, Madras (Chennai), India

Personal:  As a way of continuing Johnson & Johnson Vision Care’s strong relationship with the College, Shiv accepted the invitation to be on the Dean’s Council following Dr. Carol Lakkis.  Shiv has a PhD in Chemistry with a focus in organic chemistry.  Shiv has been a chemist for J&J Vision Care in Jacksonville since 2000.

Dr. Rebecca Marcon

Occupation:  UNF Professor Emerita of Psychology

Education:  Ph.D. in Psychology - Louisiana State University, M.A. Education (School Psychology) - University of California Los Angeles, B.A. Psychology - California State University Fullerton. 

Personal:  Rebecca continues her advocacy for UNF faculty and students by serving on the Dean's Leadership Council. She enjoys spending time with friends, helping Head Start, watching college sports, traveling, and baking.

Christina McIntosh 

Occupation: Local Realtor and team leader for ENGEL & VÖLKERS Jacksonville. Serving the Jacksonville, St Johns, Ponte Vedra, Nocatee and surrounding areas.  Specializing in New Construction, Listings, Relocations and buyers. 

Education:  Bachelor of Arts, Spanish, UNF ‘95 

Personal:  Married with four children, enjoys family time traveling and boating.  Favorite hobby is to fish.

Rhodes Robinson 

Occupation: Currently a Principal at Environmental Services, Inc. Rhodes is a wildlife biologist, Certified Environmental Professional, and Professional Wetland Scientist. During his career, he has conducted environmental studies throughout the Southeastern United States and Eastern Caribbean on over 1,000,000 acres of land. He has extensive experience in large-scale planning and permitting projects, conducting and coordinating master plans, developments of regional impacts, environmental impact statements, and mitigation banks.

Education: North Carolina State University, B.S., Textile Technology; North Carolina State University, B.S., Wildlife Biology; North Carolina State University, M.S., Wildlife Biology

Personal: Rhodes and his wife Sarah live in Queens Harbor.

Bob Tonsfeldt  

Occupation:  As a retired business executive, Bob is currently attempting to perfect retirement. Bob’s career was rooted in the telecom industry with the last ten years of his career involved in cellular.  Bob served as President of BellSouth Mobility.

Education:  Bob earned a B.S. in Electrical Engineering from Iowa State University in 1957. Bob took many short courses in marketing, and participated in an 18-month tour of education at Bell Labs.

Personal:  Bob plays Gin Rummy three days a week, Bridge two to four days a week, and attends church on Sunday. He is also a frequent patron of the movies and enjoys classical music.