A Picard lord on the Somme estuary with an English honour and a Norman family network (his sister is William de Briouze's wife).
The town of Saint-Valery-sur-Somme and the county of Ponthieu are covered by the Flanders researcher.
Who he is
- Name
- Thomas of Saint-Valery
- Title
- Lord of Saint-Valery
- Since
- 1191, after his father Bernard died at the siege of Acre (not re-checked)
- Born
- Not pinned
- Family
- Son of Bernard of Saint-Valery. His sister Matilda (Maud) is the wife of William de Briouze. His wife is a lady of the house of Ponthieu (not re-checked).
- Confidence
- low
An Anglo-Norman-Picard baron: the lords of Saint-Valery held the English honour of Saint-Valery (Beckley and Iffley in Oxfordshire). Richard took and burnt Saint-Valery in 1197 while it was on Philip's side; Thomas fought for Philip at Bouvines in 1214. His position on 1 January 1200 is not pinned.
Overlord
The count of Ponthieu (for Saint-Valery), and the king of England for the English honour
What it holds
- Saint-Valery-sur-Somme (town and castle; see the Flanders records)
- The English honour of Saint-Valery (Oxfordshire)
How it was acquired
Inherited.
Allies and rivals
Brother-in-law of William de Briouze; a vassal of Ponthieu, whose count is Philip's brother-in-law.
How things stand that morning
Leaning to Philip with Ponthieu; not pinned.
Wealth
The Somme estuary port and its trade with England.
Military
Saint-Valery castle.
Threats
- Raids from the Norman side, as in 1197
Where the sources disagree
Evidence: Family links known; 1199-1200 position not documented in the sources checked.
On the map: Seat only; the Flanders researcher draws Ponthieu.
Primary sources for Held of the king
Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.
- Chronicle of Andres, William of Andres (about 1220 to 1234). The chronicle and cartulary of a small abbey between Guines and Ardres, near the border of Flanders and Boulogne. Read online
- Chronicle of Hainaut, Gislebert of Mons (about 1195 to 1196). Ends in 1195, so it has no 1200 entries, but it is the indispensable background for Flanders and Hainaut: the career of Count Baldwin V of Hainaut (VIII of Flanders), his union of the two counties, the settlement with Philip over Artois, the rights, castles, fiefs and vassals of Hainaut listed by a man who ran its chancery, and the youth of Baldwin IX, who held both counties in 1200. Read online
- Chronicles of Saint-Martial of Limoges, Bernard Itier and other monks of Saint-Martial; Geoffrey of Vigeois for the earlier chronicle (Geoffrey's chronicle to 1184; Bernard Itier's notes about 1195 to 1225). Bernard Itier, librarian of Saint-Martial, kept dated notes through 1200 of what reached Limoges: Richard's death at Chalus in 1199, the viscounts of Limoges and the lords of the Limousin, John's passage through Aquitaine in 1200 and the affairs of Angouleme and the Lusignans, and the abbey's own elections and prices. Read online
- The Great Chronicle of Tours, Anonymous (a canon of Saint-Martin of Tours) (about 1227). The Loire valley's view of the Angevin succession. Read online
- Universal Chronicle of the Anonymous of Laon, Anonymous (an English-born canon of Laon) (about 1219). A Picard chronicle whose author had lived in England and keeps an eye on both kingdoms. Read online
- Deeds of Philip Augustus, Rigord (about 1186 to 1206, in stages). The French court's own chronicle for the year, from the monk of Saint-Denis who called himself the king's chronographer. Read online
- Deeds of Philip Augustus; The Philippide, William the Breton (Guillaume le Breton) (Gesta about 1214 to 1220; Philippide 1214 to 1224). William abridged Rigord for the years before 1207 and then continued him, so for 1200 the Gesta is a shortened Rigord with a few added touches: the Le Goulet settlement, Blanche's marriage, and the interdict. Read online
- History of the Counts of Guines, Lambert of Ardres (about 1196 to 1203, unfinished). A house history of the counts of Guines and lords of Ardres, written while Count Baldwin II and his son Arnold were alive and finishing in 1203. Read online
4 more in the sources library for France and Iberia.
Sources and studies
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.