I have read a couple of Father Gabriele Amorth’s books....I had NO idea he was in his 80s. One of his books spoke of one of JP2’s exorcisms. The books were fascinating.
I've read nothing of Amorth's, but have read most of Malachi Martin's books. In that context, I'm quite surprised at Amorth's age as Martin frequently commented on the physical toll most exorcists undergo, and how few of them rarely have a full life expectancy as a result...