born 19 May 1845 in Scotland
died 16 May 1917 in Sharon, Mercer, Pennsylvania, age 72
parents: Robert Mills and Margaret McCartey
Note that if he was born 19 May 1845, he would not yet have turned 72 by 16 May 1917. The year of his birth may have been filled in later (the ink looks marginally darker) based on his age, without regard to the fact that he died 3 days before his birthday.
On the other hand, census records suggest a birth anywhere between 1843 and 1846, so he might have been born in 1845 and been "almost 72" at death.