De Leonardis Family History
De Leonardis Surname Meaning
Italian: patronymic from the personal name Leonardo. It is formed with the Latin ablative plural suffix -is imparting the broader sense ‘belonging to of’.
In this case, it conveys the meaning ‘member of the Leonardi family’.
This is similar to the name Leonardi, which shares the same root.
The structure reflects a common practice in Italian naming conventions, highlighting familial connections.
Such patronymic forms are a crucial aspect of Italian heritage and lineage.
Source: Dictionary of American Family Names 2nd edition, 2022