Guys, I was browsing the portrait site, and I was a bit surprised when all the standard BG1-2 portraits had the following designation:

Artist: Unknown
Source: http://perso.wanadoo.fr/cassinus/

We might not know exactly who was the artist for each of the portraits in BG1/2, but surely, BioWARE Corp is a more accurate credit, instead of the French site which copied them over from the game?