diff --git a/wrap/Constructor.cpp b/wrap/Constructor.cpp
index 169f07f8f..545bc406a 100644
--- a/wrap/Constructor.cpp
+++ b/wrap/Constructor.cpp
@@ -139,10 +139,15 @@ void Constructor::emit_cython_pxd(FileWriter& pxdFile, Str className) const {
 
   for (size_t i = 0; i < nrOverloads(); i++) {
     ArgumentList args = argumentList(i);
-    // ignore copy constructor, it's generated by default above
+    // ignore copy constructor, it's generated above by default
     if (args.size() == 1 && args[0].is_const && args[0].is_ref &&
-        !args[0].is_ptr && args[0].type.cythonClass() == className)
-        continue;
+        !args[0].is_ptr) {
+        cout << args[0].type.cythonClass() << " vs " << className << endl;
+        if (args[0].type.cythonClass() == className ||
+            args[0].type.cythonClass() == "This")
+            continue;
+    }
+
     // generate the constructor
     pxdFile.oss << "\t\t" << className << "(";
     args.emit_cython_pxd(pxdFile, className);
diff --git a/wrap/Module.cpp b/wrap/Module.cpp
index 6976c9c89..c4894c8ce 100644
--- a/wrap/Module.cpp
+++ b/wrap/Module.cpp
@@ -64,6 +64,13 @@ static void handle_possible_template(vector<Class>& classes,
   }
 }
 
+static void push_typedef_pair(vector<TypedefPair>& typedefs,
+                              const Qualified& oldType,
+                              const Qualified& newType,
+                              const string& includeFile) {
+    typedefs.push_back(TypedefPair(oldType, newType, includeFile));
+}
+
 /* ************************************************************************* */
 Module::Module(const std::string& moduleName, bool enable_verbose)
 : name(moduleName), verbose(enable_verbose)
@@ -130,7 +137,17 @@ void Module::parseMarkup(const std::string& data) {
     [assign_a(singleInstantiation.namespaces_, namespaces)]
     [push_back_a(templateInstantiationTypedefs, singleInstantiation)] 
     [assign_a(singleInstantiation, singleInstantiation0)]; 
- 
+
+  Qualified oldType, newType;
+  TypeGrammar typedefOldClass_g(oldType), typedefNewClass_g(newType);
+  Rule typedef_p =
+      (str_p("typedef") >> typedefOldClass_g >> typedefNewClass_g >>
+       ';')
+      [assign_a(oldType.namespaces_, namespaces)]
+      [assign_a(newType.namespaces_, namespaces)]
+      [bl::bind(&push_typedef_pair, bl::var(typedefs), bl::var(oldType),
+                     bl::var(newType), bl::var(currentInclude))];
+
   // Create grammar for global functions
   GlobalFunctionGrammar global_function_g(global_functions,namespaces);
 
@@ -148,7 +165,7 @@ void Module::parseMarkup(const std::string& data) {
       (str_p("namespace")
       >> basic.namespace_p[push_back_a(namespaces)]
       >> ch_p('{')
-      >> *(include_p | class_p | templateSingleInstantiation_p | global_function_g | namespace_def_p | basic.comments_p)
+      >> *(include_p | class_p | templateSingleInstantiation_p | typedef_p | global_function_g | namespace_def_p | basic.comments_p)
       >> ch_p('}'))
       [pop_a(namespaces)];
 
@@ -323,11 +340,15 @@ void Module::emit_cython_pxd(FileWriter& pxdFile) const {
                  "\t\tT* get()\n"
                  "\t\tT& operator*()\n\n";
 
+  for(const TypedefPair& types: typedefs)
+    types.emit_cython_pxd(pxdFile);
+
   //... wrap all classes
   for(const Class& cls: uninstantiatedClasses)
     cls.emit_cython_pxd(pxdFile, uninstantiatedClasses);
+
   //... ctypedef for template instantiations
-  // TODO: put them in the correct place!
+  // TODO: put them in the correct place!!!
   for(const Class& cls: expandedClasses) {
     if (cls.templateClass) {
       pxdFile.oss << "ctypedef " << cls.templateClass->cythonClass() << "[";
diff --git a/wrap/Module.h b/wrap/Module.h
index 64ce5dea1..986340946 100644
--- a/wrap/Module.h
+++ b/wrap/Module.h
@@ -22,6 +22,7 @@
 #include "GlobalFunction.h"
 #include "TemplateInstantiationTypedef.h"
 #include "ForwardDeclaration.h"
+#include "TypedefPair.h"
 
 #include <string>
 #include <vector>
@@ -43,6 +44,7 @@ struct Module {
   std::vector<ForwardDeclaration> forward_declarations;
   std::vector<std::string> includes; ///< Include statements
   GlobalFunctions global_functions;
+  std::vector<TypedefPair> typedefs;
 
   // After parsing:
   std::vector<Class> expandedClasses;
diff --git a/wrap/TypedefPair.h b/wrap/TypedefPair.h
new file mode 100644
index 000000000..4f36464a0
--- /dev/null
+++ b/wrap/TypedefPair.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "Qualified.h"
+
+namespace wrap {
+struct TypedefPair {
+    Qualified oldType, newType;
+    std::string includeFile;
+
+    TypedefPair() {}
+    TypedefPair(const Qualified& oldType, const Qualified& newType,
+                const std::string& includeFile)
+        : oldType(oldType), newType(newType), includeFile(includeFile) {}
+
+    void emit_cython_pxd(FileWriter& file) const {
+        file.oss << "cdef extern from \"" << includeFile << "\" namespace \""
+                 << oldType.qualifiedNamespaces("::") << "\":\n";
+        file.oss << "\tctypedef " << oldType.cythonClass() << " "
+                 << newType.cythonClass() << "\n";
+    }
+};
+}
\ No newline at end of file
diff --git a/wrap/tests/cythontest.h b/wrap/tests/cythontest.h
index 9181d9e6c..d0b718eb9 100644
--- a/wrap/tests/cythontest.h
+++ b/wrap/tests/cythontest.h
@@ -1,16 +1,23 @@
 namespace gtsam {
 
+#include <gtsam/inference/Key.h>
+typedef size_t Key;
+
 #include <gtsam/base/FastVector.h>
-template<T> class FastVector{};
-typedef gtsam::FastVector<size_t> KeyVector;
+template<T> class FastVector {
+  FastVector();
+  FastVector(const This& f);
+};
+
+typedef gtsam::FastVector<gtsam::Key> KeyVector;
 
 #include <gtsam/base/FastList.h>
 template<T> class FastList{};
-typedef gtsam::FastList<size_t> KeyList;
+typedef gtsam::FastList<gtsam::Key> KeyList;
 
 #include <gtsam/base/FastSet.h>
 template<T> class FastSet{};
-typedef gtsam::FastSet<size_t> KeySet;
+typedef gtsam::FastSet<gtsam::Key> KeySet;
 
 #include <gtsam/base/FastMap.h>
 template<K,V> class FastMap{};
@@ -687,6 +694,7 @@ template<CALIBRATION>
 class PinholeCamera {
   // Standard Constructors and Named Constructors
   PinholeCamera();
+  PinholeCamera(const This& cam);
   PinholeCamera(const gtsam::Pose3& pose);
   PinholeCamera(const gtsam::Pose3& pose, const CALIBRATION& K);
   static This Level(const CALIBRATION& K, const gtsam::Pose2& pose, double height);
@@ -843,13 +851,13 @@ virtual class SymbolicFactor {
   SymbolicFactor(size_t j1, size_t j2, size_t j3, size_t j4);
   SymbolicFactor(size_t j1, size_t j2, size_t j3, size_t j4, size_t j5);
   SymbolicFactor(size_t j1, size_t j2, size_t j3, size_t j4, size_t j5, size_t j6);
-  // static gtsam::SymbolicFactor FromKeys(const gtsam::KeyVector& js);
+  static gtsam::SymbolicFactor FromKeys(const gtsam::KeyVector& js);
 
   // From Factor
   size_t size() const;
   void print(string s) const;
   bool equals(const gtsam::SymbolicFactor& other, double tol) const;
-  // gtsam::KeyVector keys();
+  gtsam::KeyVector keys();
 };
 
 #include <gtsam/symbolic/SymbolicFactorGraph.h>
@@ -884,19 +892,19 @@ virtual class SymbolicFactorGraph {
   gtsam::SymbolicBayesTree* eliminateMultifrontal(const gtsam::Ordering& ordering);
   pair<gtsam::SymbolicBayesNet*, gtsam::SymbolicFactorGraph*> eliminatePartialSequential(
       const gtsam::Ordering& ordering);
-  // pair<gtsam::SymbolicBayesNet*, gtsam::SymbolicFactorGraph*> eliminatePartialSequential(
-  //     const gtsam::KeyVector& keys);
+  pair<gtsam::SymbolicBayesNet*, gtsam::SymbolicFactorGraph*> eliminatePartialSequential(
+      const gtsam::KeyVector& keys);
   pair<gtsam::SymbolicBayesTree*, gtsam::SymbolicFactorGraph*> eliminatePartialMultifrontal(
       const gtsam::Ordering& ordering);
-  // pair<gtsam::SymbolicBayesTree*, gtsam::SymbolicFactorGraph*> eliminatePartialMultifrontal(
-  //     const gtsam::KeyVector& keys);
+  pair<gtsam::SymbolicBayesTree*, gtsam::SymbolicFactorGraph*> eliminatePartialMultifrontal(
+      const gtsam::KeyVector& keys);
   gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::Ordering& variables);
-  // gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::KeyVector& variables);
+  gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::KeyVector& variables);
   gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::Ordering& variables,
       const gtsam::Ordering& marginalizedVariableOrdering);
-  // gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::KeyVector& variables,
-  //     const gtsam::Ordering& marginalizedVariableOrdering);
-  // gtsam::SymbolicFactorGraph* marginal(const gtsam::KeyVector& variables);
+  gtsam::SymbolicBayesNet* marginalMultifrontalBayesNet(const gtsam::KeyVector& variables,
+      const gtsam::Ordering& marginalizedVariableOrdering);
+  gtsam::SymbolicFactorGraph* marginal(const gtsam::KeyVector& variables);
 };
 
 #include <gtsam/symbolic/SymbolicConditional.h>
@@ -908,7 +916,7 @@ virtual class SymbolicConditional : gtsam::SymbolicFactor {
   SymbolicConditional(size_t key, size_t parent);
   SymbolicConditional(size_t key, size_t parent1, size_t parent2);
   SymbolicConditional(size_t key, size_t parent1, size_t parent2, size_t parent3);
-  // static gtsam::SymbolicConditional FromKeys(const gtsam::KeyVector& keys, size_t nrFrontals);
+  static gtsam::SymbolicConditional FromKeys(const gtsam::KeyVector& keys, size_t nrFrontals);
 
   // Testable
   void print(string s) const;