Indagine
Indagine (also ab Indagine, de Indagine) is a Latinized last name, derived from the Latin word for "investigation" or sign". Notable people with the last name include:

Johannes de Indagine (Benedictine) (d. 1469), German Benedictine monk and abbot
Johannes de Indagine (1415–1475), German monk and theologian
Johannes Indagine (1467-1537), German humanist and priest

References