Thorkell succeeded Leif some time after 1018 AD[?]. Leif, himself, had previously succeeded his father, Eric the Red, or Eirikr Thorvaldsson[?].
... 25 to 44, 36.0% from 45 to 64, and 12.5% who are 65 years of age or older. The median age is 44 years. For every 100 females there are 99.5 males. For every 100 females ...