Theobald I, known as the Trickster, was a vassal of 10th Century West Frankish King Lothair.

This person is my 27 x great-grandfather.

He was born sometime around 910 but history does not record where. He is the son of Thibault, Viscount of Tours and his 1st wife, who records do not name¹.

Titles

In 944, Theobald succeeded his father as Theobald I, “Le Tricheur” (The Trickster) Count of Blois and Viscount of Tours¹.

Family

He married Luitgarde de Vermandois, sometime in 943 or 944¹.

Together they had five children¹:

• Theobald of Blois
• Hugh of Blois
• Eudes of Blois
• Emma of Blois

Notable events

In 952, Theobald’s brother-in-law Alain II, Duke of Evraux died¹. Theobald took over Brittany as guardian of his underage nephew Drogo¹. History shows he plotted against Richard I, Count of Normandy – whose grandfather is Rollo the Viking, another ancestor of mine.

This means he was at war with his daughter’s husband’s uncle. Emma married William IV, whose grandfather was Rollo.

Richard defeated Theobald in battle in 955¹.

In 957, Theobald signed a charter withdrawing his claims to a serf in favour of the monks of Saint-Martin de Tours¹.

In 960, he gained control of the counties of Chatres and Châteaudun, becoming the vassal of Lothair, King of the West Franks by 963¹.

In 964, Theobald was excommunicated by the Archbishop of Reims for taking multiple estates, including Coucy, from the archbishopric¹.

In May 974, history records him as donating to Saint-Florent de Saumur, without indicating what he donated¹.

Death

He died on 16 January in 975² or 977, but records do not show where he died¹. History does not record how he died, or where he’s buried.

Lineage

This person is my 27 x great-grandfather.

1. House of Blois; Medieval Lands; Charles Crawley; (Retrieved 2021-10-09) [↩][↩][↩][↩][↩][↩][↩][↩][↩][↩][↩][↩]
2. Royalty for Commoners (4th edition); Roderick W Stuart; Genealogical Publishing Ltd; 2002[↩]