F. M. Criteser, son, and grandsons?

In the portrait, the older gentleman on the left is Francis Marion Criteser. His son John Isaac Criteser is on the top. The other two persons in the picture have not been identified.
Is this a four generation photograph? Or are the two younger people both the children of John Isaac? In either case, I am interested in determining the names of the two younger people in the picture.

On 8 Oct 1996 William Criteser and his aunt Frances report the boy in front is Morgan Criteser and the person on the right with the "hair" is Philander Criteser. Thanks Bill and Frances!

Can anybody else confirm or argue? If you can identify one or both please send email to Walt Criteser.

Copyright (c)1996, 2007 by Walt Criteser - All Rights Reserved

F. M. Criteser, son ...