Depends on what variant of Hungarian you're talking about.

There's Systems Hungarian as used in the Windows header files or Apps Hungarian as used in the Apps division at Microsoft. For Apps Hungarian, see the following URL for a reference - https://idleloop.com/hungarian/

For Apps Hungarian, the variable incorporates the type as well as the intent of the variable - in the Apps Hungarian link from above, these are called qualifiers.

so for the grandparent example, rewritten in C, would be something like:

    struct FileNode {
        FileNode *pfnParent;
        DWORD ibHdrContent;
        DWORD cb;
    }

For Apps Hungarian, one would know that the ibHdrContent and cb fields are the same type 'b'. ib represents an index/offset in bytes - HdrContent is just descriptive, while cb is a count of bytes. The pfnParent field is a pointer to a fn-type with name Parent.

One wouldn't mix an ib with a pfn since the base types don't match (b != fn). But you could mix ibHdrContent and cb since the base types match and presumably in this small struct, they refer to index/offset and count for the FileNode. You'd have only one cb for the FileNode but possibly one or more ibXXXX-related fields if you needed to keep track of that many indices/offsets.