Based on the Indenture Database looks like the Cockerham's used the Bristol Port to Virginia. Although this does not account for the 17 passengers listed on the 1666 deed, all three of these below are listed on that deed. However the indentures are dated 1658?
https://pbase.com/daveb/image/170958184

See other land patents for list of all persons transported in patents including Cockerham in VA 16oos.

Bristol Records
John Woodward, to Virginia, August 5 1658, male, Edward Cockerham
Robert Minson, from Bristol, shoemaker, to Virginia, August 17 1658, male, William Cockerham
John Mayo, mariner, to Virginia, August 19 1658, male, William Cockram, planter