After the war, Temple quickly formed a new law firm with Samuel A. Rogers and James Deaderick. In 1866, he was appointed
chancellor of Tennessee's Eighth Chancery District, succeeding
Samuel R. Rodgers, who had died. In 1870, he was moved to the Second Chancery District, where he served as chancellor until 1878. He lost much of his fortune during the
Panic of 1873, however. Temple believed in a diversified economy that was based on both agriculture and industry. He gave numerous lectures extolling East Tennessee's climate and natural resources during this period. In the late 1870s and early 1880s, Temple provided legal, agricultural, and promotional assistance to the
Rugby Colony, then being developed on the Cumberland Plateau. Temple retired from the legal profession in 1880, In 1893, he wrote a sketch of Tennessee governor
John Sevier to mark the occasion of the reinterment of Sevier on the lawn of the
Knox County Courthouse. In 1897, he published
The Covenanter, The Cavalier, and The Puritan, which discusses the origins and contributions of the
Scotch-Irish (Temple uses the broader term "
Covenanter") in American history.
East Tennessee and the Civil War In 1899, Temple published his Civil War memoir,
East Tennessee and the Civil War, the purpose of which was to vindicate the actions of East Tennessee's Unionists, many of whom were considered traitors by fellow Southerners. Like his contemporary,
Thomas William Humes, Temple traces the origins of East Tennessee's Unionist sentiments to Revolutionary War patriotism, but goes a step further, arguing this sentiment was rooted in the early influence of Scotch-Irish Covenanter settlers, who were devout and independent, and zealously committed to religious and political liberty. Temple rejected secession as unconstitutional, arguing that the Founders clearly envisioned a perpetual Union. He argued that revolt was only acceptable to overthrow an unjust government, and endeavored to show that not only had the federal government gone to great pains to appease Southern slaveowners, but had been favorable to Southern interests throughout much of the nation's history. Temple suggested that the secession movement had little to do with slavery or states' rights, but was driven instead by Southern elites more concerned with personal ambitions. He went so far as to suggest that
most Southerners opposed secession in 1860, and that votes in favor of secession were the result of intimidation, fraud, and temporary panic. Temple's book contains detailed accounts of several key events of Civil War-era East Tennessee, many of which he personally witnessed. He provides one of the more extensive descriptions of the
East Tennessee bridge-burnings, having gone to great pains to identify and correspond with members of the conspiracy. He also provides an invaluable account of the
East Tennessee Convention, of which he had been an integral member, having provided the draft for the convention's final resolutions. ==Death and legacy==