Phoebe [shining] was an epithet for the moon-goddess Artemis/Selene/Cynthia, as was Phoebus for Apollo the sun-god. Phebe is the feminine form. The moon often has a red tinge - note esp from Wikipedia

•Red moon, the colour of the moon in a lunar eclipse
•Red moon, another name for a full moon

"Ask for my credit, you will find I have none" surely supports the suggestion I mad a few posts back as to why he has taken to drinking at home with just one companion, rather than at the inn where his credit has run out?

~M~