The [Real] Importance of being Draco Malfoy

[samnanya]

No: HPFGUIDX 114157

I wonder if JKR will suprise us all and have Draco Malfoy
turn out to be the Half-Blood Prince.  We know that his
mother's line is pure because of the Blacks, but precious
little is said about Lucius' ancestry......
JKR has already said that pureblood is not necessary to
be a Death Eater.
At the end of GOF (706)  Fudge responds to Harry's
allegation that Lucius Malfoy was a Death Eater by saying
"Malfoy was cleared! ... A very old family -"
Hmmm I ownder why the word "wizard" or "wizarding" was
not added as it was in so many other places.
Not much yet to go on, but isn't that what suprises are all 
about? If you don't think so, please provide CANON evidence 
that Lucius is indeed pureblooded........