瓦伦派 most plausibly renders 'Valentinians' — the Gnostic Christian school founded by
瓦伦廷 (Valentinus, c. 100–160 CE), an Alexandrian theologian whose followers proposed a complex aeon-emanation cosmology that orthodox Church Fathers (Irenaeus, Tertullian) attacked at length. The
派 (-ist / -ian) suffix is the standard sect/school marker.