Mošinsky was born Adolphus Ignatius Joannes Nepomuk in Donji Miholjac.

His father Ignatius was descended from the Nałęcz family of Poland (whose original name was Moszyński).

One of his most important achievements was building the Zagreb sewer system from scratch and turning the Medveščak stream into an underground canal.

During Mošinsky's term in office, many important cultural buildings such as the Croatian National Theater, the Mimara Museum, and the Art Pavilion were built.

[4] After serving three consecutive terms, Mošinsky set a record in mayoring length (later to be broken by Milan Bandić).