I am guessing
15th Level Mage
STR:

He an ol man)
DEX:8
CON:7
INT:18
WIS:18
CHR:15
At the time he was killed he must have only memorized the spells Magic Missile and I think Melfs Acid Arrow. Wouldn't you need spell componets to cast certain spells like Acid Arrow. I know not in the BG1 game but you know in actual d and d just curious.