See remarks (in the notes) on Chaucer's Balade of gentilesse.
For if e name of gentilesse be referred to renoun and clernesse of linage.
For it seme at gentilesse be a maner preysynge at come of decert of auncestres.
To which add, as a twenty-third, the three stanzas on gentilesse quoted in Scogan's poem (no. 33).
The first line means—'With regard to, or As to the first stock (or source), who was the father of gentilesse.'