Looks like he was at Waterloo. Someone on here is offering to check the records. He has them for all 28,000 at Waterloo. It does mention Brugges. As to causes, it looks like pulmonary, ie lungs something but also mentions wound to head.
You should get a result on here.
Added: The 79th was at Quatre Bras too. At the end of Waterloo, no senior officers survived.