Rashi on Daniel
to the anonymous Heb. לַפַּלְמוֹנִי. This word is like two: פְּלוֹנִי אַלְמוֹנִי, and Jonathan ben Uziel translated it in the Book of Samuel (I 21: 3): “covered and hidden,” like (Deut. 17:8): “If a matter be hidden (יִפָּלֵא) from you.” אַלְמוֹנִי means a widower (אַלְמָן) without a name, [i.e., bereft of a name] for he [the angel] did not explain to him what he was and what his name was.