quality:corruption
Early life

He was born on December 13, 1902, in Colorado Springs, Colorado. He was the son of Edward Smith Parsons (1863–1943) and Mary Augusta Ingersoll (1863–1949). His father had attended Yale Divinity School, was ordained as a Congregationalist minister, and served first as a minister for a pioneer community in Greeley, Colorado. At the time of Parsons' birth, his father was a professor in English and vice-president at Colorado College. During his Congregational ministry in Greeley, Edward had become sympathetic to the Social Gospel movement but tended to view it from a higher theological position and was hostile to the ideology of socialism. Also, both he and Talcott would be familiar with the theology of Jonathan Edwards. The father would later become the president of Marietta College in Ohio.

Parsons' family is one of the oldest families in American history. His ancestors were some of the first to arrive from England in the first half of the 17th century. The family's heritage had two separate and independently developed Parsons lines, both to the early days of American history deeper into British history. On his father's side, the family could be traced back to the Parsons of York, Maine. On his mother's side, the Ingersoll line was connected with Edwards and from Edwards on would be a new, independent Parsons line because Edwards' eldest daughter, Sarah, married Elihu Parsons on June 11, 1750.