The traditional Spanish masculine term for a boy’s fifteenth-birthday celebration is quinceañero.
Quinceañero is the masculine counterpart of quinceañera. In Spanish, grammatical gender affects the ending of many nouns describing people, so the final -o identifies the male form while the final -a identifies the female form.
The feminine quinceañera tradition is much more widely known and documented, but celebrations for boys also exist in some communities. Their structure can include formal clothing, family rituals, music, dancing, and a large reception, although the customs are not identical everywhere.
A chambelán is not the name of the celebration. That word usually identifies a male attendant or escort in the honoree’s court, so it describes a participant rather than the birthday event itself.