Alma 50:28

And it came to pass that when the people of Morianton, which were led by a man whose name was Morianton, found that the people of Lehi had fled to the camp of Moroni, they were exceeding fearful, lest the army of Moroni should come upon them, and destroy them;

The people of Morianton were led by a man named Morianton. When they found out that the people of Lehi had run to Moroni’s camp, they got scared. They were afraid that Moroni’s army would come and kill them.

When Morianton and his people realized that Lehi had gone to Moroni for help, they panicked. They were terrified Moroni’s army would come and wipe them out.