Theobald V of Blois

Theobald V the Good (1130–1191) was Count of Blois and Chartres from 1151, second son of Theobald the Great and Matilda of Carinthia; his elder brother Henry took Champagne. In 1164 he married Alix of France, daughter of Louis VII and Eleanor of Aquitaine, who bore his heir Louis I.

In 1171 he staged the first blood-libel trial in continental Europe, burning thirty Jews. After opposing the young Philip II he reconciled with him, joined the Third Crusade in 1190, and died at the siege of Acre on 20 January 1191.