One person of this name
Dona Mercedes de MELIS (viuda de Yeregui)
Everyone in this archive called Dona Mercedes de MELIS (viuda de Yeregui).
One person in this archive was called Dona Mercedes de MELIS (viuda de Yeregui).
A name is not a person. Every entry above has its own page, because they are different people — see how this archive grades what it says.