This would be a difficult question to answer as this signs of this disease have been found back as far as the dinosaur's.
The aardvark (Orycteropus afer) is indigenous to the African continent. If the question is how non-Africans named it "aardvark" instead of how it was referred by African tribes, it may be because...
In Sweden, by Carl Wilhelm Scheele, in 1772.
Lead is known from prehistoric times.