Alessandro Marchesini (1664–1738) was an Italian painter and art merchant of the late-Baroque and Rococo, active in Northern Italy and Venice. He first trained in Verona with Biagio Falcieri and then with Calza. He then moved to Bologna, to work in the studio of Carlo Cignani. He is described as gaining fame for his allegories with small figures. He painted in Venice for the church of San Silvestro and in Verona for the church of San Stefano. He is also remembered for recommending a young painter, Canaletto, to the Lucchese art collector Stefano Conti, stating that he was like Luca Carlevarisbut with a sun shining.
Studi sopra la storia della pittura italiana dei secoli xiv e xv e della scuola pittorica. By Cesare Bernasconi. Published 1864. Page 372 (google books). Original from Oxford University