George Leo Haydock, on Judg 13:18

“And he answered him: Why askest thou my name, which is wonderful?”

“Wonderful. Hebrew Peli. Some have concluded that this was the proper name of the angel, as it is one of the titles of the Messias, Isaias ix. 6. But it is more probable that the angel did not reveal his name. (Chaldean) Others divide this sentence thus, “and he (the angel, or rather God) was wonderful.” He was the author of all miracles, to whom sacrifice was immediately offered. It is doubtful whether the angels have distinctive names. But we read of Michael, &c., and there is no reason why they should not have names denoting their peculiar dignity and offices. (Calmet) — Michael, the guardian of the church, perhaps appeared on this occasion. (Menochius)”

Imported from an open dataset — not yet checked against the printed edition.