Walt has covered it all but, as Devil's advocate, I must point out that Alzheimer was the demon responsible for loss of memory.
Is there an equivalent to Goddess Mnemosyne (personification of memory) in other cultures?
Technically ...Mnemosyne was a Titan, not a goddess.
Moneta ... Is the Roman goddess of memory
Seshat ... Egyptian goddess of scribes
Airmid ... Celtic goddess of learning
Saraswati ... Hindi goddess of knowledge