What do you mean with "second marriage"?

This is the announcement(!) of the marriage of Johannes Weiss with Anna Stäheli (Stehli), the daughter(!) of Anna Barbara Sidler. The marriage took actually place in Zürich-St.Peter - see Johannes Stehli oo 1765 Anna Barbara Sidler. As I don't see any indication for this being Anna's second marriage, I assume it will be her first(!) marriage.

Hiesige Bürgerinnen, so sich anderswohin verheÿrathen.

[Female citizens getting married somewhere else]

Anna Stäheli, B. Johannes Stähelis, des Schneiders, und A(nna) Barbara Sÿdlerin ehl(iche) Tochter.

Getauft [baptised] den 10. Xbr 1775

Namen ihrer Braütigame [names oft he grooms]

B. Johannes Weiß, Schneider, aus dem Eige, der Pfarre Mettmenstetten.

Verkündet [announced] Jenner den 10. [MDCCCII = 1802]

I am not sure how to interpret the "B." for both "B. Johannes": looks like an abbreviated "first" name - but I don’t see that in other records.