Felix was born to Marcellin St. Vrain and an Indian maiden named Royal Red Cloud, reported to be the sister to Chief Red Cloud of the Oglala Sioux. He was born at Fort St. Vrain in what is now Weld County, Colorado

His father was the Operator of the fort. For good reason, he had to leave his family at the fort, and go back to his birth home in Missouri. He promised to return and did so briefly to retrieve his two sons, Felix and Charles, and take them back to Missouri for the purpose of education.
During the Civil War, Felix enlisted in the Confederate Army into "A" Co 2nd MO Inf. He fought at the Battle of Vicksburg and at Baker Creek, where he was captured on the 16th of May 1863. He was transferred to Ft Delaware, a Union POW camp, on Jun 15th, 1863. On the 16th of July 1863 he took the Oath of Allegiance and enlisted into the Union army, Pennsylvania Independent Battery A Heavy Artillery. He died on or about 31 Dec 1863. Charles, His brother, also enlisted into the Army and fought with the "E' Company 39th Regiment Missouri Inf, for the Union.
---------Information from Historical and Military Records.

Felix was born to Marcellin St. Vrain and an Indian maiden named Royal Red Cloud, reported to be the sister to Chief Red Cloud of the Oglala Sioux. He was born at Fort St. Vrain in what is now Weld County, Colorado

His father was the Operator of the fort. For good reason, he had to leave his family at the fort, and go back to his birth home in Missouri. He promised to return and did so briefly to retrieve his two sons, Felix and Charles, and take them back to Missouri for the purpose of education.
During the Civil War, Felix enlisted in the Confederate Army into "A" Co 2nd MO Inf. He fought at the Battle of Vicksburg and at Baker Creek, where he was captured on the 16th of May 1863. He was transferred to Ft Delaware, a Union POW camp, on Jun 15th, 1863. On the 16th of July 1863 he took the Oath of Allegiance and enlisted into the Union army, Pennsylvania Independent Battery A Heavy Artillery. He died on or about 31 Dec 1863. Charles, His brother, also enlisted into the Army and fought with the "E' Company 39th Regiment Missouri Inf, for the Union.
---------Information from Historical and Military Records.