Rosey Grier is a former NFL player, actor, singer, Christian minister and needlepoint enthusiast. In fact, in 1973, he published Rosey Grier's Needlepoint For Men. I remember him as a panelist on game shows when I was a kid.
His fame and popularity in the 70s may explain why the creators of this 1972 ad didn't feel the need to identify him by his last name.
Fudge Sauce a la Rosey
Recipe from a 1972 as for Carnation evaporated milk
1 large can undiluted Carnation evaporated milk
2 cups sugar
3 squares unsweetened chocolate
1 tsp. vanilla
Mix Carnation, sugar and chocolate in saucepan. Bring to boil over medium heat. Cook 5 minutes, stirring vigorously (don't even think of stepping away from the stove, just keep stirring). Remove from heat. Add vanilla. Beat with rotary beater for 1 minute. Serve hot or chilled on ice cream or cake. If sauce seems a bit too thick, just add a little undiluted Carnation and blend before serving. Makes 2 1/2 cups.
Here's Rosey with his handiwork.