Linking the old name to the new
Every office abroad that knew you under one name will want proof of the other. A name change paper is the bridge: it says the person on the old record and the person on the new passport are one person. Banks, universities and pension bodies ask for it the moment two files stop matching. Working out how to legalize a Legal Name Change Certificate is really about proving that link in a way a stranger will accept.
Which sheet to ask for
Ask the far end what form they want before ordering anything. Some take a decree; more often the useful sheet is an extract from the civil registry at your Comune, carrying a note of the change. Both name the old and the new spelling side by side, which is the whole point. Get it on paper with the clerk's seal, since a portal print-out carries none. That seal is what makes consular legalization of a Legal Name Change Certificate in Italy possible.
The administrative desk
A registry sheet or a decree is an administrative record, so the Prefettura in Bologna is the desk. A prefecture legalizes papers made by the state and by town halls across its province. Court rulings and notary deeds fall in a different class and go to the Procura della Repubblica. Bring the sealed sheet and a €16 tax stamp, the marca da bollo. The embassy attestation of a Legal Name Change Certificate in Bologna is booked only after this stamp lands.
The consular stamp, and the paper chain
The consulate of the country reading your file adds the last stamp. That visit is the embassy legalization of a Legal Name Change Certificate in Bologna, and consulates often want it filed with the record that still shows the old name. Bring the passport in the new name, so the counter can see both ends of the chain. Whether the consular step is needed at all depends on the destination, so ask the office there in writing first.
Price and pace
The Italian side is a €16 tax stamp on the sheet. The consulate charges a fee it sets on its own and can revise, so ask on the day of booking. Both stamps together usually take 10–15 business days, and a rush route closes in 3–5 business days. Those who legalize a Legal Name Change Certificate in Bologna alongside a birth or marriage record should send the set as one job. Doing that keeps the names on every sheet in step.