I live in a 200 year old farm house and one of the sub-basements in the old part of the house has a major crack. It's 2" wided and about 3 foot long. And the foundation wall is a bit bowed.
This is under the (medium sized) shed, though connected to the house, is actually not main part of the house.
Should I just fill it with cement or do I also need to reinforce the old foundation with additional stone/cement block wall?