Quite right: “grandsire kings” is very good. It is not, of course,
literally correct, but one may, in poetry, fairly write the particular
term “grandsire” for the general “ancestor”—
O my defense and proud delight!
“Proud delight.” Now I think I shall correct that to “dear delight.” I
think the alliteration is well worth securing, and you may allow yourself
a familiarity in literature, Horatius, where all men are equal, which,
as I have no doubt you felt in writing, would be highly unbecoming in
society. “Proud delight” does you credit as a man, my good Horatius; as
a poet I permit—nay, I invite you to write “dear.”