By Gregg WendorfAdvance News JournalA famed historic church and cemetery in Hidalgo County, down by the river, dating back to the 19th Century made national news recently after being named a historical site, thanks to their ties to the famed Underground Railroad that helped slaves escape, well, slavery, and flee to Mexico in hopes of a new life, freedom.The Jackson Ranch Church and Martin Jackson Cemetery were added to a list by the National Park Service last month, officially named the National Underground Railroad Network to Freedom.In 1998, legislation titled the National Underground Railroad Network to Freedom Act of 1998 ...