Especially if Marvel Comics isn't saved by the Star Wars licensed comics causing it to accept a buyout by Universal (producing those tv movies and shows) like DC is owned by Warner Brothers.
Two of Edwards daughters were already married/betrothed as was John. Elizabeth could have married Edmund though.
A potential idea is the youngest Catherine married to her cousin Warwick as (1) they likely won't have children and (2) Warwick can't be married in to a plotting noble family. Or...