Most people who have played a Ubisoft game could not name a single person who built the company. They know the logo, the swirl on the launcher. They could not name the five brothers behind it, and they definitely could not name Claude. Claude Guillemot died Friday evening near La Baule, on the French Atlantic coast, when a Cessna 421 went down in a field shortly before landing. He was 69. A flight instructor died with him. He was one of five brothers from a farm-supply family in Brittany. In…