How to Build a Family Tree from Scratch

Building a family tree is one of the most rewarding research projects you can undertake. It connects names and dates to real people, reveals migration stories, and gives future generations a record they could never reconstruct on their own. The good news is that getting started requires no specialist knowledge and very little equipment. This guide walks you through every step.

1. Gather What You Already Know

The most common mistake new researchers make is immediately searching online databases before writing down what they already know. Start with yourself. Open a notebook — or better, a digital tree tool — and record your own full name, date of birth, birthplace, and any other details you know for certain. Then add your parents, their dates and places of birth, and where they were married.

Once you have filled in your immediate family from memory, do a quick search at home. Look for:

• Birth, marriage, and death certificates — often stored in filing cabinets, safe deposit boxes, or with older relatives
• Passports and naturalization papers — particularly valuable if your family immigrated
• Old family bibles — many Victorian-era families recorded births and deaths on the dedication page
• Photographs with names written on the back — a photograph of an unknown great-grandparent might have their name, birth year, and hometown on the reverse
• Letters and postcards — even a postmarked envelope can confirm where a relative was living at a given point in time

Write down everything you find, even partial information. An approximate birth year is far better than nothing — it tells you which decade's census records to search.

2. Talk to Living Relatives First

Before you open a single online database, call your oldest living relatives. Grandparents, great-aunts, and elderly cousins hold information that no archive contains. They remember names, relationships, family stories, and the towns their parents came from — details that may never have been written down anywhere.

Keep the conversation relaxed and open-ended. Ask "Tell me about your grandparents" rather than "What was your grandmother's maiden name?" Narrative questions produce far more detail. Take notes or, with the person's permission, record the conversation on your phone. Follow up with specific questions afterward to nail down dates and place names that were mentioned in passing.

3. Work Backwards One Generation at a Time

Once you have exhausted what you and your relatives know personally, move to official records. The golden rule of genealogical research is to work from the known to the unknown: start with yourself and move backwards through each generation, verifying each step before moving to the next.

For each person you add to your tree, try to establish three things: when and where they were born, when and where they were married (if applicable), and when and where they died. These three events — birth, marriage, death — are the anchor points for every individual in genealogical research, and a corresponding document exists for each one in most countries.

For recent generations (within the last 70“80 years), official vital records are your primary source. For earlier generations, census records become increasingly important. The US decennial census from 1790 to 1950 is largely searchable online; the UK has censuses from 1841 onwards; Canada from 1851. Parish registers (baptisms, marriages, burials) extend back much further and cover the period before civil registration.

4. Choose the Right Tool for Your Tree

A spreadsheet can work for a handful of people, but it becomes unmanageable fast. A dedicated family tree tool displays relationships visually, lets you attach photographs and documents, and can export your data in GEDCOM format — the universal standard that allows you to share your tree with any genealogy platform.

Key things to look for in a family tree tool:

• Visual tree view — you should be able to see the tree as a tree, not just a list
• GEDCOM import/export — essential for moving your data between platforms as your research expands
• Photo attachment — faces tied to names make the tree meaningful
• Privacy controls — if your tree includes living people, you want control over who can see their data
• Offline capability — cloud-only tools leave you stuck when your internet is down or the service shuts down

Build My Family is a free, browser-based tool that meets all of these criteria. Your data never leaves your device, there is no subscription required, and you can export to GEDCOM, PNG, or SVG at any time.

5. Common Beginner Mistakes to Avoid

Experienced genealogists make these mistakes too, but knowing about them in advance saves significant backtracking.

• Accepting online trees without verification. User-submitted family trees on Ancestry and FamilySearch contain errors. Treat them as leads, not facts, and always verify against an original document.
• Ignoring female lines. Maternal lines are harder to trace because surnames change at marriage, but they are equally important. Always record a woman's maiden name when you know it.
• Not recording sources. Writing down where each fact came from — the specific document, its reference number, the platform you found it on — is the single most important habit in genealogy research. Without sources, you cannot resolve contradictions or share your findings credibly.
• Moving too fast. It is tempting to push the tree as far back as possible quickly. But one wrong link — a father assumed based on a matching surname rather than confirmed by a document — corrupts every generation above it. Verify each step before moving to the next.
• Forgetting collateral lines. Siblings of your direct ancestors often appear in the same records and can help you identify a shared ancestor when a direct line is unclear.