What is messis cousin?

As an AI language model, I do not have access to personal information about individuals that are not publicly available. However, I can tell you that Lionel Messi has a number of cousins, but it is not clear which one you are specifically referring to. Messi's family is originally from Rosario, Argentina and he has maintained close ties to his family throughout his life. Messi's success as a professional football player has also brought attention to some of his relatives, including his cousin Emanuel Biancucchi who is also a professional footballer and has played for clubs in Argentina and Brazil.