diff --git a/gtsam/base/Matrix.cpp b/gtsam/base/Matrix.cpp
index 7f44d43db..3b16beb51 100644
--- a/gtsam/base/Matrix.cpp
+++ b/gtsam/base/Matrix.cpp
@@ -36,38 +36,6 @@ using namespace std;
 
 namespace gtsam {
 
-/* ************************************************************************* */
-Matrix Matrix_( size_t m, size_t n, const double* const data) {
-  MatrixRowMajor A(m,n);
-  copy(data, data+m*n, A.data());
-  return Matrix(A);
-}
-
-/* ************************************************************************* */
-Matrix Matrix_( size_t m, size_t n, const Vector& v)
-{
-  Matrix A(m,n);
-  // column-wise copy
-  for( size_t j = 0, k=0  ; j < n ; j++)
-    for( size_t i = 0; i < m ; i++,k++)
-      A(i,j) = v(k);
-  return A;
-}
-
-/* ************************************************************************* */
-Matrix Matrix_(size_t m, size_t n, ...) {
-  Matrix A(m,n);
-  va_list ap;
-  va_start(ap, n);
-  for( size_t i = 0 ; i < m ; i++)
-    for( size_t j = 0 ; j < n ; j++) {
-      double value = va_arg(ap, double);
-      A(i,j) = value;
-    }
-  va_end(ap);
-  return A;
-}
-
 /* ************************************************************************* */
 Matrix zeros( size_t m, size_t n ) {
   return Matrix::Zero(m,n);
diff --git a/gtsam/base/Matrix.h b/gtsam/base/Matrix.h
index 317698b3f..caee66851 100644
--- a/gtsam/base/Matrix.h
+++ b/gtsam/base/Matrix.h
@@ -45,27 +45,6 @@ typedef Eigen::Matrix<double,6,6> Matrix6;
 typedef Eigen::Block<Matrix> SubMatrix;
 typedef Eigen::Block<const Matrix> ConstSubMatrix;
 
-/**
- *  constructor with size and initial data, row order !
- */
-GTSAM_EXPORT Matrix Matrix_(size_t m, size_t n, const double* const data);
-
-/**
- *  constructor with size and vector data, column order !!!
- */
-GTSAM_EXPORT Matrix Matrix_(size_t m, size_t n, const Vector& v);
-
-/**
- *  constructor from Vector yielding v.size()*1 vector
- */
-inline Matrix Matrix_(const Vector& v) { return Matrix_(v.size(),1,v);}
-
-/**
- *  nice constructor, dangerous as number of arguments must be exactly right
- *  and you have to pass doubles !!! always use 0.0 never 0
-*/
-GTSAM_EXPORT Matrix Matrix_(size_t m, size_t n, ...);
-
 // Matlab-like syntax
 
 /**