When Was that Sub-Division Divided?

My immigrant ancestors Peter and Barbara Bieger came to Illinois in 1850 after a short pit stop in Cincinnati, Ohio. The officially purchased a small lot in Warsaw, Hancock County, Illinois, in November of 1850. I had never given any thought to the subdivision where their home/tavern was located other than it’s name and it’s location. Searching for information on their neighbors in that same subdivision was on my to-do list in an attempt to learn more about the Bieger’s Germanic origins.

While searching for something else, I discovered that the subdivision was platted out originally in October of 1849. It was a “new” subdivision when my relatives purchased the property there. Did they possibly have some connection to the individual who organized the subdivision?