Anthony,

In the link you are given I see a text full of doubtly sources, especially what concerns the fighting for the castle/farm of Hougomont as there are
- the novel of Victor Hugo, written years after the facts
- the texts of Thiers, known in France for his mythology on Napoleon
- diairies of French officers, mostly written also years after the battle, with in mind the fact that they had to give a better view on their defeat
- paintings and drawings of actual artists also based on non proven sources
- paintings and etchings made years after the battle, still taken the mythology as be proven, etc etc

Maybe this link will give an insight of more real explanations and facts

http://projecthougoumont.com/wp-content/uploads/2017/02/Of_Hedges_Myths_and_Memories_A_historica.pdf

Marc Moerman FINS