Robert Heinlein's Lazarus Long, the Senior, or oldest member of the human race, is a third generation Howard, bred for longevity, but also, coincidentally and inexplicably, a mutant who lives much longer than any other member of the Howard Families.
Edgar Rice Burrough's (ERB's) John Carter claims to remember only an extended adulthood without any childhood and to know nothing of his own origin even though he has a great-grand-nephew and must surely therefore also know his brother or sister and their parents? (ERB wrote glaring inconsistencies.) Carter died on Earth but was astrally projected to Mars where he still lives in a tangible undying body and speculated just once that maybe he is the materialization of a long dead warrior. Mysteries beyond mysteries. (SM Stirling, in his Martian novel, alludes to the cave near which Carter was astrally projected.)
Might Hanno and Long become like what Carter claims to be? Let me explain. Most people have lived for less than 100 years. Whatever age you have now reached, how much do you remember of your first two years? If you were to live for 1000 years, how much would you remember of your first 20 years? If you were to live for 1,000,000 years, how much would you remember of of your first 20,000 years? And so on. Hanno and his fellow immortals agree to meet again in another million years and expect to continue living after that.
Could there be an sf series as outlined below?
Vol I, set in One Billion AD: a man who seems to have lived forever remembers only the last ten millennia.
Vol II, set in Two Billion AD: a man who seems to have lived forever is by now known by a different name, has learned so much from experience that he has completely changed his personality and remembers only the last ten millennia.
Vol III, set in Three Billion AD...
