Dawson Creek is named after George Dawson who was on a land survey team in the late 1800's. But I suspect you mean Vancouver, named after George Vancouver who explored the Pacific North West of North America. We also named a rather large Island after him, Vancouver Island.
87 miles taking this route: Take I-35 SOUTH (towards WACO), from Dallas, to SH-171 to CORSICANA off EXIT 368A in Hillsboro; turn left off the exit ramp onto SH-171 EAST to CORSICANA. Take SH-171 EAST to SH-31, and turn left onto SH-31 EAST to CORSICANA. Take SH-31 EAST to Dawson.