Marcus H. MacWillie was a politician who represented the Confederate Arizona Territory

Arizona Territory (CSA)

The Territory of Arizona was a territory claimed by the Confederate States of America during the American Civil War, between 1861 and 1865. It consisted of the portion of the New Mexico Territory south of the 34th parallel north including parts of the modern states of New Mexico and Arizona. Its...

 in the Congress of the Confederate States

Congress of the Confederate States

The Congress of the Confederate States was the legislative body of the Confederate States of America, existing during the American Civil War between 1861 and 1865...

 during the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

.

Little is known of MacWillie's birthplace, date of birth, or his early life. MacWillie passed his bar exam and established a legal practice in Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

. He later moved to La Mesilla

Mesilla, New Mexico

Mesilla is a town in Doña Ana County, New Mexico, United States. The population was 2,180 at the 2000 census...

 in what is now New Mexico

New Mexico

New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

 and resumed his legal career.

Following the outbreak of the Civil War, MacWillie became the Attorney General

Attorney General

In most common law jurisdictions, the attorney general, or attorney-general, is the main legal advisor to the government, and in some jurisdictions he or she may also have executive responsibility for law enforcement or responsibility for public prosecutions.The term is used to refer to any person...

 of the Confederate-claimed Arizona Territory in the newly designated capital of La Mesilla. Through the shrewd political efforts of his powerful friend John R. Baylor, MacWillie was selected in early 1862 to replace Baylor's rival Granville Henderson Oury

Granville Henderson Oury

Granville Henderson Oury was a nineteenth century American politician, lawyer, judge, soldier and miner.-Early life and career:...

 as the territory's representative to the permanent Congress. Despite Arizona and New Mexico being taken over by the Union Army

Union Army

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army...

 later in 1862, MacWillie continued to represent the territory throughout the First Confederate Congress

First Confederate Congress

The First Confederate Congress was the first regular term of the legislature of the Confederate States of America. Members of the First Confederate Congress were chosen in elections mostly held on 6 November 1861.-Sessions:...

 (March 11, 1862 – February 17, 1864). He then served in the Second Confederate Congress

Second Confederate Congress

The Second Confederate Congress was the second and last regular term of the legislature of the Confederate States of America. Members of the Second Confederate Congress were chosen in elections held at various dates in 1863 and 1864...

until the end of the war.

MacWillie's activities following the war are uncertain, as is his date and place of death or his burial location.