diff --git a/src/embed_tests/Inheritance.cs b/src/embed_tests/Inheritance.cs
index 950c08548..a992ee8e4 100644
--- a/src/embed_tests/Inheritance.cs
+++ b/src/embed_tests/Inheritance.cs
@@ -59,6 +59,14 @@ public void InheritedFromInheritedClassIsSelf()
             Assert.IsTrue(PythonReferenceComparer.Instance.Equals(b, bInstanceClass));
         }
 
+        // https://github.com/pythonnet/pythonnet/issues/1420
+        [Test]
+        public void CallBaseMethodFromContainerInNestedClass()
+        {
+            using var nested = new ContainerClass.InnerClass().ToPython();
+            nested.InvokeMethod(nameof(ContainerClass.BaseMethod));
+        }
+
         [Test]
         public void Grandchild_PassesExtraBaseInstanceCheck()
         {
@@ -183,4 +191,14 @@ public int XProp
             set => this.extras[nameof(this.XProp)] = value;
         }
     }
+
+    public class ContainerClass
+    {
+        public void BaseMethod() { }
+
+        public class InnerClass: ContainerClass
+        {
+
+        }
+    }
 }