Did you see this post on the geneology.com Tiilis forum?
"YES! My Great Grandfather was Hamilton Marion Tillis who was sherif of Alachua FL around that time. How exciting it is to hear from someone! I would love to see the picture. I have been working on my family for about 25 years. However I have not been activly working on it for the last 3 or 4. But plan to get back into it. You may be the catalyst I needed to get me going again. Thanks again for the follow up,"