I have been researching the Head family too. I have a tree back to Thomas Head who married Elizabeth Allington in the 1600's . They had a son, Thomas, who died in 1758 in Compton, Berkshire.
He married Rachel Gregory and then Ann ?. He was a druggist at the Sign of the Unicorn, Exeter Exchange, London. He had property Fryor Street, Reading and Red Lane Farm, Reading. Residence Roden House., Compton, which came down to the Pottingers through marriage. I have a copy of the Hundred of Compton. which states the Head's are and old Kentish family. If anyone has any of these people on their tree I would love to hear from them.