Noe other then her pedigree:

For lines in bloud cutt out are stronger

Then lines in marble, and last longer:

And such a verse shall never fade,

That is begotten, and not made.

“Her father, brother, husband, ... kinges;

Royall relations! from her springes

A prince and princesse; and from those

Faire certaintyes, and rich hope growes.”

Here’s poetry shall be secure