Elizabeth, I haven't seen George Cabell Greer's Immigrant book but I just copied these off the original 2 Aug 1652 transportation document from the Library of Virginia digital images and indexes on their online catalog - Virginia Land Office Patents and Grants and Virginia Colonial Records Project. You have to look around a little but you can find them with a little work. If you want to see them and have any trouble let me know. Anyway the list:
Robert West, Susanna West, John West, Daniel Evans, Nancy Bowman, Mary Owen, Sam Jaringo ?, Ham Wentworth, Jane Connelly, Rbt Ebernathell, John Coppin, George Willet, Jeffrey Phillips and John Reeves. I count 14 and that is John Coppin - not Coppage and is very clearly John Coppin and I don't know why I posted John Coppage earlier.
You are right the Susannah Tillman in London in the 1650's would be 90 years old if ours when she made her will, but Susannah of London was married to Robert Tillman not Roger Tillman and is likely a different Susannah. There is another record on the Robert Tillman in London - he is in court saying that he has been in and out of jail and he is broke and he thought that he had married a rich widow from New England but she didn't have any money after all. This may be the Susannah in London? The government official was Oliver Cromwell.