Michael J Fox has shared a rare picture of his family which includes all four of his adult children.The snap posted on the actor’s Instagram yesterday was accompanied with a loving tribute to the star’s family and his wife Tracy Pollan. Michael, 60, and Tracy, 61, have been married for more than 30 years and first met while starring in the 1980s NBC sitcom Family Ties. Michael won three Emmy Awards for his part in the sitcom playing Alex P.