  Given a compact Riemann surface $\bar{X}$ of genus $g$ and a point $q$ on
$\bar{X}$, we consider $X:=\bar{X}\setminus\{q\}$ with a basepoint $p\in X$.
The extension of mixed Hodge structures, given by the weights -1 and -2, of the
mixed Hodge structure on the fundamental group (in the sense of Hain) is
studied. We show that it naturally corresponds on the one hand to the element
$(2g q-2 p-K)$ in $\Pic^0(\bar{X})$, where $K$ represents the canonical
divisor, and on the other hand to the respective extension of $\bar{X}$.
Finally, we prove a pointed Torelli theorem for punctured Riemann surfaces.
