Yes, I'm sure is the same family.
They are all from Asturias, Spain.
Asturias is like a state of Spain (actually it's a princedom) The capital of Asturias is Oviedo.
I went to Spain a lot of times, my family house is on Paredes, a very little town near Oviedo.
There is family history on Luarca too(also in Asturias).
Some Trelles came to Argentina on the 50's and I have aunts and uncles.
I have some kind of family tree but I dont have all the dates yet.., here it goes:
Camila Trelles married with Manuel Mendez(Paredes, Asturias)
Jesusa Mendez Trelles who married to Manuel Trelles Osorio
they had: Joaquin (my grandfather - came to Argentina)
Marina (came to argentina - dies last year)
Isaura (came to argentina)
Alicia (came to argentina -dies 4 years ago)
Manuel (came to argentina-dies)
Antonio (came to argentina-dies)
Cecilio (went to florida, usa -he dies too)
Maria (dies too young in spain)
Nestor (dies in spain)
Camila and Manuel also had:Macrino, Nicasio, Alfredo and Julia
It's a veeeeeeery long root, and it's very complicated, I have cousing married each other and a lot of info lost.
The Cuba and Central America root.
Well if u want me to send you all the root send me mail!!