Agüero is currently married to Giannina Maradona, the youngest daughter of Argentine football legend Diego Maradona, whom he has dated since the end of 2007. On 19 February 2009, it was announced that Giannina had given birth to a son named Benjamín in Madrid. Maradona was in the Spanish capital for the birth of his first grandson, while Agüero, 20, missed Atlético’s training session earlier in the day. Atlético offered their congratulations in a statement on their official website. Agüero has a tattoo on the inside of his right arm, inscribed in Tengwar—a form of writing invented by J. R. R. Tolkien that was used by the Elves in his works. It translates roughly to Kun Agüero in the Latin alphabet. He also has a tattoo on his left arm with his son’s name and date of birth.