He studied at the Brera Academy, where he was taught by Giulio Traballesi, Giocondo Albertolli, and Giuseppe Piermarini.
[1] Ademollo was also interested in creating frescoes for the church of Santa Caterina, but his proposal, considered too expensive, was rejected.
In Arezzo he executed frescoes with scenes from the Old and New Testaments, and in the countryside he worked in Lucignano and Monte San Savino: here in the church of the Compagnia del Suffragio he executed in 1821 the pictorial cycle that decorates it, depicting the Deposition from the Cross with the Holy Trinity and angels and Scenes from the New Testament in the side walls and vaults.
He helped fresco the Royal Chapel in the Pitti Palace and also the churches of Santissima Annunziata and Sant'Ambrogio.
His son Agostino Ademollo (1799–1841) was a writer of novels, including Marietta di' Ricci.