A New Hampshire man who was killed when his truck crashed in Central Massachusetts earlier this month is being remembered as a dedicated father and grandfather. Duane Schillemat, 65, of Nelson, died on June 4 after his pickup truck hit a tree near 585 Gulf Road in Northfield around 12:30 p.m., according to the Northwestern District Attorney’s Office. First responders found the truck fully engulfed in flames, and Schillemat was declared dead at t…