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Given a compact Riemann surface ¯ X of genus g and distinct points p and q on ¯ X, we consider the non-compact Riemann surface X := ¯ X \ {q} with basepoint p ∈ X. The extension of mixed Hodge structures associated to the first two steps of π 1 (X, p) is studied. We show that it determines the element (2g q − 2 p − K) in Pic 0 (¯ X), where K represents the canonical divisor of ¯ X as well as the corresponding extension associated to π 1 (¯ X, p). Finally, we deduce a pointed Torelli theorem for punctured Riemann surfaces.