The surname Zinola seems to have a possible toponymic origin linked to the locality of the same name, Zinola, currently a historic neighbourhood located in the western outskirts of Savona, in the region of Liguria. Although it is not an independent municipality, Zinola was a recognisable territorial entity from ancient times, which makes it plausible that the surname arose to identify persons originating from that place. This type of formation was common in medieval Italy, where many surnames were born to indicate the geographical origin of an individual, especially when they moved to another locality. The historical concentration of the surname in the Savona area reinforces the hypothesis of a Ligurian origin linked to this place name.

The surname Zinola presents an interesting set of variants that probably respond to dialectal phenomena, graphic simplifications and transcription errors over time. Among the documented forms are Zinoli and Zinolli, which could derive from phonetic adaptations or from the addition of the plural suffix typical of northern Italy (-i). Likewise, the variants Ginola and Ginoli appear, where the initial "Z" is transformed into "G", a not infrequent change in old registers due to the phonetic proximity between both sounds and the variable spelling in handwritten documents.

This type of orthographic oscillation was common in periods when surnames were not fully fixed, and depended largely on the local pronunciation and on how the scribe interpreted the sound. If the origin of the surname is indeed linked to the place name Zinola, in the Savona area (Liguria), these variants could reflect family movements within the same region or adaptations upon migrating to other territories.

In genealogical research, therefore, it is advisable to consider all these forms —Zinola, Zinoli, Zinolli, Ginola and Ginoli— as possible expressions of a same onomastic stem.