Robert Henry Hartwick, age 70, a resident of Warren, formerly of Royal Oak, died April 17, 2012 at St. John Macomb Hospital in Warren. He was born February 27, 1942 in Lakewood, OH to the late Henry and Ada Lee Lambert Hartwick. Mr. Hartwick was the owner of P.K. Supply, a welding supply store in Hazel Park. He was a member of Plum Hollow Golf Club. He enjoyed traveling, hiking and the outdoors. He is survived by his sons, Rob Faranak Hartwick of Wilmington, NC and Richard Hartwick of Warren; grandchildren, Joseph, Janelle, John and Lilia; and sister, Linda Ackley. There will be a memorial visitation Friday 4-7 p.m. at the Wm. Sullivan & Son Funeral Home, 705 W Eleven Mile Road 4 blocks E of Woodward, Royal Oak. Share your memories at www.sullivanfuneraldirectors.com.