Tennille is a feminine given name that originates from an Anglo-Norman occupational surname, historically denoting a tanner (from Old French tanneur), which was subsequently assimilated into English-speaking naming conventions as a personal appellation for girls. In contemporary Anglo-American phonology, the name is phonetically transcribed as /təˈnɪl/ (teh-NIL), characterized by a reduced schwa-like vowel in the first, unstressed syllable and a close front short vowel receiving primary stress in the following syllable. Analysis of Pennsylvania’s birth records for the period spanning 1975 through 1980 reveals that Tennille was assigned to a total of ninety female infants, with annual incidence figures fluctuating between a nadir of five occurrences in 1979 (rank 199) and a zenith of forty-five occurrences in 1976 (rank 159), thereby evidencing a narrowly defined window of modest popularity within that regional context. The diffusion of Tennille as a forename during the late 1970s corresponds temporally with the ascendance of American vocalist Toni Tennille, whose commercial success as part of the musical duo Captain & Tennille likely contributed to the name’s transient visibility and cultural resonance. Despite its relative rarity in current usage, Tennille endures as a name of technical clarity and measured distinction, appealing to those who prioritize historical etymology and an understated Anglo-American aesthetic.