diff --git a/cpp/SymbolicConditional.h b/cpp/SymbolicConditional.h
index 331669682..0c9a5d96b 100644
--- a/cpp/SymbolicConditional.h
+++ b/cpp/SymbolicConditional.h
@@ -62,6 +62,17 @@ namespace gtsam {
 			parents_.push_back(parent2);
 		}
 
+		/**
+		 * Three parents
+		 */
+		SymbolicConditional(const std::string& key, const std::string& parent1,
+				const std::string& parent2, const std::string& parent3) :
+			Conditional(key) {
+			parents_.push_back(parent1);
+			parents_.push_back(parent2);
+			parents_.push_back(parent3);
+		}
+
 		/**
 		 * A list
 		 */