Knut Hamsun was born on August 4, 1859 and died on February 19, 1952. Knut Hamsun would have been 92 years old at the time of death or 152 years old today.
There is no clear answer, some youngins are old and some oldins are young. Another opinion: At least 80. On the lighter side. This answer was kindly dedicated to Lazarus