Percival Lowell died on November 12, 1916 at the age of 61.
This answer is closed to changes. This is done in rare cases when questions are being vandalized or answers have become debates. E-mail reopen @ answers.com (no spaces) if you would like it to be reopened.
Percival Lowell was born on March 13, 1855 and died on November 12, 1916. Percival Lowell would have been 61 years old at the time of death or 157 years old today.