FreeCheck your path in minutes, no signup
You may already bea Portuguese citizen.
The path runs through a Portuguese parent, or a grandparent who is Portuguese by origin. Tell our AI who the Portuguese relative is and it separates the child route from the grandchild route.
Linha Reta AI
Free eligibility check
Guidance on the path, not legal advice ·

My grandfather was born in Braga in 1938. My father was born in São Paulo.
Your chain so far
- GrandfatherPortuguese by origin
- FatherChild of a Portuguese citizen
- YouGrandchild route
Check your path.
Tell the AI who the Portuguese relative is, where they were born and when. It separates the child route from the grandchild route and says whether your chain holds.
- A first answer in minutes
- Child and grandchild kept apart
- Free, with no signup

Example chain
Manuel Ferreira1938
Braga, Portugal
Portuguese by origin
Carlos Ferreira1966
São Paulo, Brazil
Child of a Portuguese citizen
You1994
Campinas, Brazil
Grandchild route
Know where to order each record.
The list names each generation's record and where to order it: IRN, the civil registry or the Brazilian cartório. You order the document. We do not fetch it.
- The right record for each generation
- Links to IRN and the cartório
- Gaps stay marked

Where is Manuel Ferreira's record?
The document, who holds it, where to order it
Birth record (assento)
- Held by
- Civil registry office
- Order at
- Link to IRN
- On the list
- Marked to order
Records in the chain
- Grandfather's birth record
- Father's birth certificate
- Your birth certificate
The declaration for your route, ready.
Your answers fill the declaration. Upload the certificates as they arrive: the AI reads each file and points out what is missing before you download the package.
- Child and grandchild use separate forms
- Certificates read and checked
- Sign in the browser

Declaration package
Ready to download
- The declaration for your route
- Document checklist
- Family chain
- What is yours: apostille, translation, IRN fee
How it works
From one name to a filed application. Three things you do. Linha Reta handles the paperwork in between.
Who is the Portuguese one in your family?
My grandfather, born in Braga around 1938
1Name the Portuguese relative. A name, a place and a rough year is enough to start.
Records to order
- Order
Grandfather's birth record
Civil registry, Portugal
- Order
Father's birth certificate
Registry office, São Paulo
- Have it
Your birth certificate
Registry office, Campinas
2Order the records. Linha Reta says which record to order and where. Ordering can take a few weeks.
Declaration package
Ready to download
- The declaration for your route
- Document checklist
- Family chain
- A guide to what is still yours
3Sign and file. Sign the declaration in the browser and file it yourself, with the apostille and translation.
In the package
Everything the application needs. One price, and siblings share the research.
A list per person. Each generation's record. A child and a grandchild do not use the same set.
Where to order. Links to IRN, the civil registry and the Brazilian cartório.
The family chain. Parent, and the grandparent on the grandchild route. Gaps stay marked.
Sign in the browser. You sign the declaration before downloading the package.
Upload progress. What is uploaded and what is still missing.
Official pages. The law and the forms from the Justice and IRN sites, with the date they were checked.
Apostille and translation. The package lists what is still yours: apostille, certified translation and the IRN fee.
Encrypted in transit. Your documents travel over an encrypted connection.
Never sold. Your files and family details are not sold.
One price
One family. One chain. One price. You start free and pay when you want the package. Prices are in US dollars.
compared with thousands for a firm that also files
Blog
Latest guides Child or grandchild, the 2026 law, and where to order each record.
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Read moreQuestions
Questions people ask.
Can't find yours? The AI answers questions about your own family.

Start with the Portuguese relative you know.
A name, a place and a rough year is enough. The check is free.