I wrote program notes on this for my recital, but i've deleted it now. From what I can remember, The Countess Pauline d'Abegg was a mythical person (it's dedicatee). Schumann met someone name (can't remember her name exactly) at a masked ball - perhaps a reason for the psyeudonym. (this was obviously pre-Clara days)
It's writing isn't mature Schumann (obviously, op.1!), it's shows influences of Weber and Hummel. (When Schumann realised he couldn't keep up with the 'note spiining' of Mendelssohn and Herz, he changed his compositional style). There are later compositional style that are apparent - some typical harmonic progressions, the youthful passion, the basing a theme on something external.
That's about all I can remember