Brazeau is one of the eight townships located in Perry County, Missouri, in the United States of America.

[3] The earliest settlers to the area of present-day Brazeau Township were French traders and Shawnee Indians who had been granted the right to settle along Apple creek as a buffer against other tribes to the south.

The Spanish authorities also granted Catholic American settlers who arrived from Maryland by way of Kentucky the right to settle in the area, establishing a community called the Fenwick Settlement.

[4][failed verification][5] In 1839, German Lutheran immigrants from the Duchy of Saxe-Altenburg arrived and established six "colonies" in the township: Altenburg, Dresden, Frohna, Johannisberg, Seelitz, and Wittenberg.

Grand Tower Island lies on the eastern side of the Mississippi River at the township's far eastern end; it is connected by land only to Illinois, and access to the rest of Perry County requires a boat or a drive of more than 30 miles (48 km) to the Chester Bridge at Chester, Illinois to the northwest.