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Cosimo DE MEDICI 1389–1464

Public Tree Person

What is a Public Tree Person?

A Public Tree Person is an ancestor documented independently by multiple YourRoots tree owners. When several researchers' family histories converge on the same person, we publish a shared page that combines what they've documented.

Why this is a Public Tree Person

Full name consistent across 2 independent trees
Birth year and location consistent across 2 trees
Death year and location consistent across 2 trees

Compare a Public Tree Person with your own tree using Compare Tree.

B Reliability
B
Reliability Score: B
Medium — based on the source tree
Grade scale
  • A 3 criteria (Strong)
  • B 2 criteria (Medium)
  • C 1 criteria (Basic)
Verification checklist
  • Record available
  • Descendant's record available
  • Star tree owner

2 researchers on YourRoots have Cosimo MEDICI in their family trees — each with their own records and documentation. Trace the migration path across 2 generations. If this ancestor is in your tree too, you can compare what you've found and fill in the gaps together.

Last updated: August 25, 2026 · Reliability: B — verified across 2 independent trees

Born 27 Sep 1389 · Florence, Firenze, Toscana, Italy
Died 1 Aug 1464 · Florence, Firenze, Toscana, Italy
Father Giovanni Di Bicci De Medici
Mother Piccarda Bueri
Spouse Contessina De Bardi
Children Carlo De Medici, Gian Gastone De Medici, Giovanni De Medici, Giulianno Di Medici, Pierfrancesco De Medici, Piero Il Gottoso De Medici, Pietro De Medicis
Siblings Lorenzo De Medici

Researchers connected through Cosimo MEDICI 1389–1464

and 1 more tree owner connected with Cosimo MEDICI 1389–1464

Biography

In 1389, Cosimo DE MEDICI entered the world in Florence, Firenze, Toscana, Italy, born to giovanni di bicci de medici and piccarda bueri. Cosimo DE MEDICI married contessina de bardi, and had children including carlo de medici, gian gastone de medici, giovanni de medici, giulianno di medici, pierfrancesco de medici, piero il gottoso de medici, pietro de medicis. Cosimo DE MEDICI passed away in 1464 in Florence, Firenze, Toscana, Italy.

Sources

Life Timeline

1389
Birth of Cosimo DE MEDICI in Florence, Firenze, Toscana, Italy
Birth
1464
Death of Cosimo DE MEDICI in Florence, Firenze, Toscana, Italy
Death

Oldest Ancestor Line from Cosimo MEDICI

This ancestor line traces from Florence, Città Metropolitana di Firenze, Toscana, Italy (1360) to Florence, Città Metropolitana di Firenze, Toscana, Italy (1389) across 2 generations.

Direct Lineage
generations

Frequently Asked Questions

Cosimo MEDICI (1389–1464) was born in Florence, Firenze, Toscana, Italy and died in Florence, Firenze, Toscana, Italy. 2 researchers on YourRoots have this ancestor in their family trees, each with their own records. This page combines what they've independently documented and assigns a Reliability Score (B) based on cross-tree validation.
Right now, 2 researchers on YourRoots have Cosimo in their trees. They're working independently, so connecting with them is a good way to cross-check your records and find things you might have missed. You can also explore the ancestor migration map that traces 2 generations of this lineage geographically.
It varies by researcher — some have census records, others have marriage certificates, parish registers, or family Bible entries. Scroll up to see exactly what each person has cited.
Use the "Compare Tree" button on any researcher's profile above. You can compare your tree side by side with theirs, see where your records overlap or differ, and collaborate to fill gaps.

Cosimo MEDICI's Ancestors

Pedigree chart — 3 generations on record

Self
Cosimo DE MEDICI PTP
1389–1464
Florence, Firenze, Toscana, Italy
Parents
Unknown
Unknown
Grandparents
Unknown
Unknown
Unknown
Unknown

Cosimo MEDICI's Descendants

1.
CM
Cosimo DE MEDICI PTP 1389–1464