The (240) Gateway Ancestors are American colonists with Magna Carta ancestry whose well-documented ancestral lines are documented in Royal Ancestry: a Study of Colonial & Medieval Families by Douglas Richardson (2013), Volumes 1-5, and in Magna Carta Ancestry: a Study of Colonial & Medieval Families, also by Douglas Richardson (2011).
Hugh Jones and Martha French Hill are not found in this list of Gateway Ancestors that have documented connections to a surety Baron. However, there are colonial immigrants that appear to have Magna Carta lines on WikiTree that do not appear in the list of known Gateway Ancestors. However, in many cases there are no sources that prove these lines and finding documentary support for these connections can be challenging. That appears to be the case in the two trails you present. Note that many of the relationships are marked "unknown confidence" and each will require evidence to prove the proposed relationships.
Colonial Immigrants who have unverified trails to a Surety Baron that are not found in the Douglas Richardson references listed above are called Questionable Gateway Ancestors https://www.wikitree.com/wiki/Category:Questionable_Gateway_Ancestors
Determining the validity of a trail between a Questionable Gateway Ancestor and the Surety Baron is done by researching the line and "proving" the relationships. The exception to this is if a line has previously been researched and disproved.
In the case of the line from Hugh Jones it appears that Margaret Howard Tiperly may be problenatic as Douglas Richardson, Plantagenet Ancestry: A Study In Colonial And Medieval Families, 2nd Edition indicates that Thomas Howard and Elizabeth Stafford had two sons, Henry and Thomas. they also had three daughters, Muriel, Katherine and Mary. Margaret Howard is not indicated as a daughter of Thomas and Elizabeth Stafford.
