Ruler · 1129 – 1153

Eustace IV of Boulogne

Lived 1129 – 1153. Countess of Boulogne of County of Boulogne, 1146 – 1153.

Wikidata's English label: Eustace IV, Count of Boulogne.

For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the reign.

Lived: 1129 – 1153; 24 years
In office: 7 years; one reign
Lines: 1; County of Boulogne
Left it: ending not on record; nothing on record

Countess of Boulogne

County of Boulogne · the 2nd of 8 dated reigns · 1125 – 1277

Matilda of Boulogne1125 – 1152

Eustace IV of Boulogne1146 – 1153

William I, Count of Boulogne1153 – 1159

Marie I, Countess of Boulogne1160 – 1169

Matilda II of Boulogne1216 – 1259

3 after

ending not on recorda second row: a reign that began before the last had ended — rival claimants, or a shared thronethis entry

Reigned 1146 – 1153 · 7 years

Came to it: the child of the ruler before, on record
Left it: ending not on recordnothing on record: no death date to read the end against

Open in the atlas

Eustace IV of Boulogne in the atlas: the article, every line they sat in, and the map in their years.
Analyse the succession of County of Boulogne: every reign, how each ended, and the numbers over them.
States of Location unknown, and every state with a page.

Wikidata Q447522 (CC0) · the reigns from Wikidata's P39 terms, the rulers' own articles read by grammar (sentences quoted above, CC BY-SA 4.0) and Kokkonen & Sundell where they code the line · data built 2026-10-07 · Pastlas v2.13.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.