So...
The man of metal is someone who had a nickname related to metals (iron, bronze, silver, gold, steel, copper...) and who would not like the thing about the homeless people much.
Driven by wind could mean either that the "homeless" were led by someone whose name could be translated as "Wind" or they sailed in boats.
The surprise part could be either that they did not know there was land where they went or that they did not know there would be a place for them where they went.
The thing about the "dueño" (OOC: if you want to write the ñ, write the ~ and then the n (no spaces, or it won't work)) not being a person could be either that it is not 1 person (that it might be a group of people) or that it is an animal.
The fact that you have written it in Spanish might mean that either the "homeless" were Spanish, that the place where they travelled was either Spain or a country where Spanish is currently spoken (most of the Caribbean and America south of Rio Grande) or that the animal could be tied to said countries.
Finally, the thing about the "dueño" having to deal with problems in one of his other houses might mean that, if it is an animal, the "dueño" had to leave because he might have had another cave or nest and had to repair it or something. Or, if it is a group of people, maybe they had to leave because of some kind of civil war...