I have been looking for @13yrs on all the Humistons, Hummaston, humison, Humbertson, Humberston, Umberson, Humberson, Humphries, Humphress, Humphrey, etc.
Here is how you got your Henry Humiston. I have, somewhere, that William Humberston & wife got off a ship but I can't remember the name of the ship and the ship hands had spelled their son, Henry, name incorrectly as Humiston. Check it out and I think you will find out definitely.
I printed it out, but have 3 boxes of sheets of geneology but haven't found it as yet.
William Humberston • Born: Abt 1580, England • Married Abt 1615 to Julyan Boteler