We have
http://www.wikitree.com/index.php?title=Special:Relationship&action=calculate&person1_name=De_El_Rio-1&person2_name=Barranco-47
and
http://www.wikitree.com/index.php?title=Special:Relationship&action=calculate&person1_name=De_Sueza-5&person2_name=Barranco-47
But when linking the two descendants, Barranco-47 doesn't appear on the menu of common ancestors.