The Grimaldo Family Name
If your family name is Grimaldo, its origin lies with Grimaldi, a long-established Italian surname.
The change of ending between Grimaldi and Grimaldo reflects the Italian habit of naming a family in the plural or the singular.
A coat of arms belongs to a particular family line rather than to everyone named Grimaldo, so the heraldry linked to Grimaldi is a starting point, not an automatic right. For the full story, order the Grimaldo surname pack.