I took a photo of the old beams as they took them out. It appears that they came from an old barn. Notice the beam toward the bottom of the picture. It's not as noticeable in the picture, but it looks like the beam was burned. It's possible these beams were salvaged from a barn that burned down in the area.
All of the beams on the east wing porches have been replaced, and our trusty guys from Hume (Chad and Chris) managed to keep the second floor porches from collapsing, a major concern given the skeleton like status of the porches now. There's not much structure to hold it together! It was difficult to brace the second floor porch while the beams were being swapped out. This photo shows how they braced the porches. You can also see all the new beams as well.