Original sentence: But it is not just for their Grandfather, their eldest brother, Leon Sanchez (being the eldest he got named after their Grandfather Leon), tragically passed away in a quadbike accident in 2006 and so the name also marks that.He said that he has a lot of pride in this name and, as a result, celebrates his goals by pointing to the sky.His two brothers, Luis and Antonio, also carry the name as a mark of respect.León is not his surname, but he carries it as a second name in memory of his Grandfather who passed away in 2006 and tends to just go by the name Leon rather than Leon Sanchez
Edited sentence: León is not his surname, but he carries it as a second name in memory of his grandfather and eldest brother, both passed away in 2006 (the latter in a quadbike accident), and tends to just go by the name León rather than León Sánchez (as his two brothers, Luis and Antonio), also celebrating his goals by pointing to the sky