There is a John
Greenleaf, buried in Champoeg Cemetery, which is near Butteville. I found it on the Find a
Grave website. It is hard to read his stone, but it looks like it has a possible birth date of 1835, with no death date. I also found a Catherine
Greenleaf, who died in Portland,
Oregon on September 29, 1895, but there is not enough information to know if it is the right person. - This information was from the
Oregon historical archives.