Your ancestral home is Dingjiazhuang, Wendeng (Dengzhou Prefecture), Shandong. It is now Dingjiazhuang, Rongcheng City, Weihai. It was under the jurisdiction of Dengzhou Prefecture in the Qing Dynasty. My surname is also Ding, and I currently live in Shandong. You have the same ancestor.
Wendeng and Dengzhou Prefecture are two different concepts. Dengzhou Prefecture is very large and is based in Penglai, including the current Yantai, Weihai, part of Laiyang and other places.