Epistolae familiares

Epistolae familiares is the title of a collection of letters of Petrarch which he edited during his lifetime.

He originally called the collection Epistolarum mearum ad diversos liber ("a book of my letters to different people") but this was later shortened to the current title.

Familiar Letters) was largely collected during his stay in Provence about 1351 to 1353, however was not ultimately completed until 1359 when he was in Milan.

[1] It has since been discovered that Socrates was the Flemish Benedictine monk and music theorist Lodewijk Heyligen whose acquaintance Petrarch had made in the circle of cardinal Giovanni Colonna in Avignon.

Liber sine nomine is an epitome of this same work in one volume without a title (which is 19 letters).