I recently did an inspection of a home built in the early 1950’s which is old for this area. The home was settling so much you needed mountain climbing shoes to trek the steep sloped floors inside (exaggerating some) and there was a fire at some time in the attic, next to the chimney. The buyer was with me and I felt understood what was going on pretty well. She called a few days later after speaking to the Realtor to ask a few questions.
Regarding the uneven floors a Realtor told her “that’s how they used to build the homes so when they washed the floors the water would run outside”
As for the burned wood in the attic “they used to burn the wood to treat it for termites”
You never know what you will run across do you!