Was Isaiah Familiar with the ancient Babylonian Epic of Gilgamesh?

I picked up a copy of the "Absolute Beginner's Guide to the Bible" (Tom Head, Que Publishing, 2006) from the local library the other day. All sorts of fascinating little tidbits.

Apparently (I say "apparently" because I realize there might be other factors at work here than how the book presents things) God expected Isaiah to be familiar with the Epic of Gilgamesh. You've likely heard at least a passing reference to this ancient Babylonian tale, which essentially is the Babylonian version of Creation and the Flood, etc, written, according to this book, about 2000 B.C. (but I'm always suspicious of dates prior to about 500 B.C. -- too much guesswork and assumptions needed in most cases).

According to page 56, the Epic of Gilgamesh says this:

Inanna tended the tree carefully and lovingly
she hoped to have a throne and a bed
made for herself from its wood.
After ten years, the tree had matured.
But in the meantime...
the demon Lilith had built her house in the middle.
But Gilgamesh, who had heard of Inanna's plight,
came to her rescue...
[and] Lilith, petrified with fear,
tore down her house and fled into the wilderness.

Isaiah 34:14 (The Message) says this:

Wildcats and hyenas will hunt together,
demons and devils dance through the night.
The night-demon Lilith, evil and rapacious,
will establish permanent quarters.

(It seems that most translations hide this "Lilith" as "night bird" or similar, but some offer the margin note of the literal Hebrew being "Lilith".)