hes 47 of course
George R. R. Martin is 62 years old (birthdate: September 20, 1948).
If you have already had your birthday in 2010, you are 29. If you have not yet had your birthday, you are 28 and soon to turn 29 during this year, 2010.
19 years old
Eric R. Kandel is 81 years old (birthdate: November 7, 1929).