Complex sentence: The company was originally named Reyns Men's wear on the island of Catalina founded by Reyn McCullough, who sought to replace the then kitcschy and poorly-fitting Hawaiian shirts with a more stylish alternative for professional and casual wear.
Split into simpler sentences: The company was originally named Reyns Men's wear on the island of Catalina founded by a man named Reyn McCullough. McCollough sought to replace the then kitcschy and poorly-fitting Hawaiian shirts with a more stylish alternative for professional and casual wear.