diff --git a/core/utils.py b/core/utils.py
index d88f39f..d77c474 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -15,6 +15,8 @@ from pathlib import Path
 from django.contrib.auth.models import User
 
 from troggle.core.models.troggle import Expedition
+from troggle.core.models.troggle import Person
+
 
 getcontext().prec = 2  # use 2 significant figures for decimal calculations
 
diff --git a/core/views/expo.py b/core/views/expo.py
index 63f1d33..821decc 100644
--- a/core/views/expo.py
+++ b/core/views/expo.py
@@ -408,6 +408,9 @@ def getmimetype(path):
 def editexpopage(request, path):
     """Manages the 'Edit this Page' capability for expo handbook and other html pages.
     Relies on HTML5 or javascript to provide the in-browser editing environment.
+    
+    If the user is logged-on with a personal logon, then the Full Name and email 
+    address for the git commit are taken from their stored details, not from any stored cookie.
     """
     try:
         # if a cave not a webpage at all.
@@ -466,8 +469,9 @@ def editexpopage(request, path):
     if request.method == "POST":  # If the form has been submitted...
         pageform = ExpoPageForm(request.POST)  # A form bound to the POST data
         if pageform.is_valid():  # Form valid therefore write file
-            editor = pageform.cleaned_data["who_are_you"]
-            editor = git_string(editor)            
+            if not identified_login:
+                editor = pageform.cleaned_data["who_are_you"]
+                editor = git_string(editor)            
             if filefound:
                 headmatch = re.match(r"(.*)<title>.*</title>(.*)", head, re.DOTALL + re.IGNORECASE)
                 if headmatch:
@@ -497,8 +501,9 @@ def editexpopage(request, path):
                 print(f"Cookie set: {editor} for {COOKIE_MAX_AGE/(24*3600)} days")
                 try:
                     change_message = pageform.cleaned_data["change_message"]
-                    editor = pageform.cleaned_data["who_are_you"]
-                    editor = git_string(editor)
+                    if not identified_login:
+                        editor = pageform.cleaned_data["who_are_you"]
+                        editor = git_string(editor)
                     write_and_commit([(filepath, result, "utf-8")], f"{change_message} - online edit of {path}", editor)
                 except WriteAndCommitError as e:
                     return render(request, "errors/generic.html", {"message": e.message})
@@ -514,8 +519,10 @@ def editexpopage(request, path):
             pageform = ExpoPageForm(initial={"identified_login": identified_login, "who_are_you":editor, "html": body, "title": title})
         else:
             pageform = ExpoPageForm(initial={"identified_login": identified_login, "who_are_you":editor})
-        
 
+    if identified_login:
+        # disable editing the git id string as we get it from the logged-on user data
+        pageform.fields["who_are_you"].widget.attrs["readonly"]="readonly"
     return render(
         request,
         "editexpopage.html",