Given the task definition and input, reply with output. In this task, you will be presented with a question and you have to answer the question based on your knowledge. Your answers should be as short as possible.

what was the class year of the man born on October 29 , 1845 who found notability at the 11th-longest river in the United States at 1,280 miles ( 2,060 km ) from its headwater source at the head of Blackwater Draw , Curry County , New Mexico to its mouth at the Gulf of Mexico with a 45,000-square-mile ( 116,000 km2 ) drainage basin ?
1870