THE DATE BEHIND THE NAME

Diogo I, Duke of Viseu

Infante Diogo of Viseu (1450–1484)

Diogo I, Duke of Viseu has incompatible recorded birth dates. The main Wikidata statement lists in 1450 in Kingdom of Portugal.

Born

in 1450

An exact age is omitted because the recorded dates are incompatible or not precise enough.

Died: in 1484

Source:

No external source identified

Synchronized from Wikidata on October 5, 2026.

Original calendar: Julian. This broad date cannot be represented as a single Gregorian date; the original value is shown.

Birthplace
Kingdom of Portugal
Professions
aristocrat

Incompatible birth dates

Sources disagree: in 1450 (No external source identified) or in 1460 (No external source identified).

The main date retains its own sources. These alternatives overlap neither all other statements nor the main date. Rank is Wikidata editorial priority, not proof.

in 1460

Precision: year · Rank: normal

    No external source identified

    More about Diogo I, Duke of Viseu

    Family

    Sibling
    Manuel I of Portugal
    Father
    Infante Ferdinand, Duke of Viseu
    Sibling
    Isabella of Viseu
    Sibling
    Eleanor of Viseu
    Mother
    Infanta Beatrice, Duchess of Viseu

    All birth date sources

    A source is P248 “stated in” or a non-Wikimedia reference URL. Import-only references do not qualify.

    No external source identified

    Synchronized from Wikidata on October 5, 2026. View Wikidata record

    Questions people ask

    Where was Diogo I, Duke of Viseu born?

    Diogo I, Duke of Viseu was born in Kingdom of Portugal.

    When did Diogo I, Duke of Viseu die?

    Diogo I, Duke of Viseu died in 1484.