Question: What is the cause of death of Marie I De Coucy, Countess Of Soissons's husband?
Sentence (from "Marie I de Coucy, Countess of Soissons"): Marie I de Coucy (April 1366 – after 3 March 1405) was Dame de Coucy and d'Oisy, and Countess of Soissons from 1397.
Relevant evidence: No