Possible Clues:

• Innumerable
• Britain's peerage is numerous without this one
• Lady holding line for legion
• Infinite
• Noble setting for head of lost legion
• Are of minor importance for a host
• Be not as important as many
• Innumerable, yet none in the English peerage, such
• In England it's so numerous, the absence of this sort of peer
• The peer's consort is about fifty in any number of ways