EeEK! It is a rat.
Hi, I live down near Rochester. I too have a 100-year+ farmhouse. I haven't seen rats in there though, thank God! We have loads of mice though.
I did have a garden rat get in the garage last spring/winter and trapped it and baited the trap, but used a squirrel trap.
Good luck. Mine came from the compost heap when we moved it and made its way to the garage where I keep my chicken and rabbit feed.