Who was sent to Texas to evict La Salle and mapped multiple rivers?

Captain Alonso de Leon was a significant figure in early Texas exploration, particularly noted for his efforts to address the presence of Robert Cavelier, Sieur de La Salle. Tasked with the objective of evicting La Salle from Texas, de Leon embarked on expeditions that not only focused on this goal but also contributed to an early mapping of Texas and its geography. His explorations led him to navigate and document various rivers in the region, which were critical for understanding the landscape and resources available in Texas at the time.

De Leon's role was crucial during a period when Spanish interests were threatened by French encroachments in the territory. His expeditions helped lay the groundwork for future Spanish missions and settlements in Texas. The work he did contributed both to military objectives and to scientific knowledge by thoroughly charting important waterways, which would later aid in navigation and settlement in the area.

The other options relate to figures who were either not involved in Texas during this period or whose contributions were focused on different geographical areas or timeframes. Thus, Captain Alonso de Leon is recognized for his direct involvement and significant contributions to the early exploration and mapping of Texas.