diff --git a/e-c-b.md b/e-c-b.md
index 3b9a00fce..a0c0f9922 100644
--- a/e-c-b.md
+++ b/e-c-b.md
@@ -2,6 +2,7 @@
 
 - A [[person]].
 - [[tertulias culturales]]
+  - Buscaban libros de la biblioteca para seguir charlando.
   - [[alfredo sanchiz]]
   - [[torija]]
 
diff --git a/e-c-s.md b/e-c-s.md
new file mode 100644
index 000000000..e366b85ed
--- /dev/null
+++ b/e-c-s.md
@@ -0,0 +1,8 @@
+# E. C. S.
+
+- A [[person]].
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[person]: person "Person"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/m.md b/m.md
index c5693850e..ef9a04403 100644
--- a/m.md
+++ b/m.md
@@ -4,6 +4,7 @@
 - Buena en matemáticas, mala en lengua.
 - [[aka]] [[nito]] [[11-12]]
 - [[push]] [[e. c. b.]]
+- [[sibling]] [[e. c. s.]]
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [person]: person "Person"