The Spanish generally have two surnames (first surname of father + first surname of mother), unhyphened. What is the protocal on Wikitree for introducing them into a tree? I have used a hyphen for my wifes surnames (although this is not done in Spain), as well as for my childrens name (as here in NZ they officially have a hyphen). I have seen a few others on this site apparently using an underscore between the two surnames. Obviously how they are introduced will affect searches and create the potential for unmatched duplicates.