Alexander Posey was born on August 3, 1873, near present Eufaula, Creek Nation. He was the oldest of twelve children, and his parents were Lewis Henderson "Hence" Posey, of Scots-Irish Muskogee Creek^[3] ancestry, from the Creek Berryhill family and Nancy (Phillips) Posey (Creek name Pohas Harjo), who was Muscogee Creek and a member of the Harjo family.^[4][5]

The Creek have a matrilineal kinship system, by which Posey and his siblings were considered born into his mother's Wind Clan of the tribal town of Tuskegee. They took their status from her, and property and hereditary positions were passed through her line. Posey's father Lewis H. Posey was born to Scots/Irish/Creek family, but he identified as Creek.^[6] He had been orphaned at an early age and raised in the Creek Nation; he spoke the Muscogee language fluently; and he was made a member of the Broken Arrow tribal town. Young Alexander and his siblings spoke Muscogee as their first language. As they grew older, their father insisted they speak English as well; when Posey was fourteen, his father would punish him if he spoke Muscogee. From that time, Posey received a formal education, including three years at Bacone Indian University in Muskogee, Oklahoma.

In 1896 at the age of 23, Posey married Minnie Harris, a schoolteacher. Together they had three children, Yahola Irving, Pachina Kipling, and Wynema Torrans, each with a middle name drawn from one of the couple's literary heroes.^[5]

Posey studied writing at Bacone. He read naturalists such as John Burroughs and Henry David Thoreau, who inspired him to write about the landscape of his childhood.^[1]

After college he worked at Indian Journal, where he published poems. In 1895, he represented the Wind Clan as a member of the Creek National Council. He was also the director of a Creek orphanage.

In 1901, Posey edited the journal Eufaula Indian Journal. He gained national recognition for founding the first Indian-published daily newspaper.

In 1906, Posey was secretary for the Sequoyah Constitutional Convention, called to draft a constitution for a state to be majority Native American. According to the Encyclopedia of Oklahoma, he is credited with having written most of that constitution.^[7] The Native Americans hoped to gain a state of their own, in the period when whites were pushing for the Oklahoma and Indian territories to be admitted as a state to the Union. The Native Americans were not successful. Their tribal structures were dissolved as part of extinguishing Native American land title in what became the state of Oklahoma.

As Posey honed his satirical skills, he created a fictional persona, Fus Fixico (Muscogee Creek for "Heartless Bird"), whose editorial letters were published in the Indian Journal. Fus Fixico was represented as a full-blood Muscogee traditionalist, whose chatty letters were about his everyday life or detailed accounts that he had heard the fictional Muscogee medicine man Hotgun share with an audience of Creek elders: Kono Harjo, Tookpafka Micco, and Wolf Warrior. These monologues are written in Creek dialect.^[8]

The Fus Fixico Letters have aspects of nostalgia but are primarily sharp political commentary about Muscogee Nation, Indian Territory, and United States politics. This was a time of political upheaval because Creek and other tribes' communal lands were being broken up into individual household allotments under the Dawes Act, to extinguish land title in preparation for statehood. The Curtis Act of 1898 dismantled tribal governments and institutions, also in preparation for Indian Territory to become part of the state of Oklahoma.

Experienced politicians from the Five Civilized Tribes met to draft a constitution to establish an indigenous-controlled State of Sequoyah, but their proposals were rejected by the US Federal Government. Posey served as secretary for the 1906 State of Sequoyah convention. His Fus Fixico letters from 1902 to 1908 poked fun as statehood was debated. Various US newspapers proposed syndicating the Fus Fixico letters nationwide, but Posey refused. His readership was within Indian Territory, and he did not believe a non-Native audience would understand the humor.^[8]

So-called dialect literature was extremely popular at the dawn of the 20th century. Usually dialect literature was based on African-American dialect. The Posey family had also avidly read Robert Burns, who wrote poetry in the Scots language. Posey's father read such dialect writers as Max Adler, Josh Billings, Paul Laurence Dunbar, and James Whitcomb Riley. Alexander Posey saw dialects as a means of expressing Muscogee oratory styles in English; he did not care for dialect writers who tried to adopt it as part of a popular trend: "Those cigar store Indian dialect stories...will fool no one who has lived 'six months in the precinct.' Like the wooden aborigine, they are the product of a white man's factory, and bear no resemblance to the real article."^[8]

On April 28, 1908, Posey was swept away while trying to cross the flooded North Canadian River with a friend.^[9] His body was recovered a week later, and buried at Greenhill Cemetery in Muskogee.^[5]

In April 2017, the University of Central Oklahoma honored Posey by inaugurating the Alexander Lawrence Posey Speaker Series, showcasing voices considered "othered" in contemporary literary discourse. Poet Danez Smith was the inaugural speaker.^[10]

A number of his collected works have been published posthumously.

• The Poems Of Alexander Lawrence Posey: Alex Posey, The Creek Indian Poet, Minnie H. Posey, ed. (2010). Kessinger Press. ISBN 978-1-163-08652-0.
• Lost Creeks: Collected Journals, Matthew Wynn Sivils, ed. (2009) Lincoln: University of Nebraska Press. ISBN 978-0-8032-1628-0.
• Song of the Oktahutche: Collected Poems, Matthew Wynn Sivils, ed. (2008) Lincoln: University of Nebraska Press. ISBN 978-0-8032-2053-9.
• Chinnubbie and the Owl: Muscogee (Creek) Stories, Orations, and Oral Traditions, Matthew Wynn Sivils, ed. (2005). Lincoln: University of Nebraska Press. ISBN 978-0-8032-3746-9.
• The Fus Fixico Letters, Daniel Littlefield, Jr. and Carl A. Petty Hunter, ed. (1993)Lincoln: University of Nebraska Press. ASIN B001QREZM0.
• "Journal of Alexander Lawrence Posey," Chronicles of Oklahoma. 1968, ASIN B003ZW6ZHM.
• "Journal of Creek Enrollment Field Party, 1905," Chronicles of Oklahoma. 1968, ASIN B003ZWAAOG.

• McIntosh County Seat War

• Schneider, Bethany Ridgway. "Alexander Lawrence Posey (Creek) (1873—1908)." Lauter, Paul, general ed. The Heath Anthology of American Literature, Volume C: Late Nineteenth Century: 1865—1910. Volume C. Wadsworth Publishing, 2009: 190–197. ISBN 978-0-547-20166-5.

• Kosmider, Maria. Tricky Tribal Discourse: The Poetry, Short Stories, and Fus Fixico Letters of Creek Writer Alex Posey. Boise: University of Idaho Press, 1998. ISBN 978-0-89301-201-4.

• Works by or about Alexander Posey at Internet Archive
• Works by Alexander Posey at LibriVox (public domain audiobooks)  
• The complete journals and poems of Alexander Posey, Oklahoma State University
• Alex Posey, the Creek Indian Poet: The Poetry of Alexander Lawrence Posey, a free Google e-book.
• Grave site of Alex Posey, with photo of tombstone