I saw two for William, Edward is there too, but he was in a different company- he was in the Marines, sorry about that-
Here's the link on Ancestry-
I see that there is tombstone for an Edward Ivey in South Easton PA, he died in 1866, and one for William Ivey who died in 1881, also in South Easton PA, according to Ancestry.com. They both served in the Civil War for PA, they served in the same company in the Civil War. I would assume there is a relationship, probably brothers.
I saw your post on the Pennsylvania group. I'm wondering what information you have on William Ivey. Doing a quick search I see a William Ivey age 22 in Easton in 1860, he's a miner, married(?) to Elizabeth with children Mary, John and William?
Also see a William Ivey who served for PA in the Civil War on the Pension Index, widow was Elizabeth L Ivey, it appears he died in 1887?
I haven't checked on Edward, yet, just want to be sure I'm chasing the right family?