The Mill for Grinding Old People Young, By Glenn Patterson | The .Apr 12, 2012 . A casualty of the 1941 blitz on Belfast was the Third Presbyterian Church in Rosemary Street. Uncovered from the rubble was a slate inscribed by the church's architect, John Millar, who wanted posterity to know that his pristine design (completed in his 18th year) was nearly wrecked in his absence by a.old grainding mill,The Mill for Grinding Old People Young: Glenn Patterson .The Mill for Grinding Old People Young [Glenn Patterson] on Amazon. *FREE* shipping on qualifying offers. In the cold dawn of Christmas Day 1897, Gilbert Rice, 85 years old and with failing health, recounts his journey into manhood in a city on the cusp of great change. Belfast in the 1830s was a city in flux.