Fictional family tree maker
Free fictional family tree maker for writers.
A fictional family tree maker lets writers map the families in a story — who is related to whom, which marriages produced which children, and where the alliances and feuds run — so the cast stays consistent across chapters, drafts, and sequels. Unlike a photo-centric genealogy app, a diagram-first tool draws character relationships as a clean chart you can change as the story does.
Built for this kind of family
Relationship lines, not just descent
Mark affairs, estrangements, secret parentage, and rivalries — the relationships that drive plots, not just bloodlines.
Revise as you draft
Kill a character, add a hidden sibling, retcon a marriage — drag, edit, and the tree stays clean.
Describe it, AI draws it
Paste a paragraph of family backstory and the AI lays out the whole tree with correct generations.
Export for your story bible
PNG export free, print-quality PDF/SVG for your series bible or pitch documents.
How it works
Start with your protagonist
Add your main character, then build outward — parents, siblings, spouses, children.
Layer the drama
Add the relationship lines that matter to the plot: conflict, closeness, cutoffs, affairs, secrets.
Keep it beside your draft
Auto-saved in the cloud — check parentage and ages in two clicks while you write.
Study a finished tree
Frequently Asked Questions
What is the best way to make a fictional family tree?
Start from your protagonist and build outward one generation at a time, then add relationship lines (conflict, closeness, secrets) rather than only parent-child links — for fiction, the relationships are the plot. A diagram tool like GenogramAI keeps the chart clean as the cast grows and lets you revise instantly when the story changes.
Can I map spoilers like secret parentage?
Yes — that is exactly what relationship overlays are for. Draw the public family structure, then add the hidden parentage or affair as its own line. You can keep one "reader-known" tree and one "author-truth" tree as separate files.
Is it free for writers?
Yes. Building trees and PNG export are free. Paid plans add PDF/SVG export and AI features like generating the tree from a prose description of the family.
Can I make trees for an existing series or fandom?
Yes — many users map published works to study structure (see the Succession, Game of Thrones, and Harry Potter examples). For fan fiction, map canon first, then branch your AU from it in a copy.
Your characters deserve a canon
Free to start. Describe the family, watch the tree appear.
Open the tree maker