In the 1830's the average British rural worker consumed around 6500 calories per day. Most of those calories came from bread. The average family of 6 consumed around 55 pounds of bread, around 31 modern loaves, per week! This diet is closer to the historic norm for most people than our modern diets. 6500 calories worth of bread at that time would give you something like this:
Protein: ~288.5 grams (Vegans?!Protein?!😂)
Fat: ~46.2 grams
Carbohydrates: ~1346.1 grams
Dietary Fiber: ~211.5 grams