The inscription is oddly worded to me... "giving me a part in your life". Almost sounds like something an actor would say. Anyway, the haircut on the portrait reminds me of Mel Gibson back in the "Lethal Weapon" movies.
There is a repeated quote by Wayne Newton saying what is inscribed. I wouldn't have picked him for that picture but here is vintage advertising that has him looking similiarly-
You can take of a man`s money, but when it`s all said and done, you`ve only taken his money. When you take of a man`s time, you`ve taken a part of his life. I`d like to thank you for giving me a part of your life tonight.