Carl Gustav Jung was named after his grandfather, Karl Gustav Jung the elder, who served as Grand Master of the Grand Lodge Alpina of Switzerland from 1850 to 1856.

The psychologist grew up surrounded by Freemasonry and spiritualism, built his retreat at Bollingen by hand-carving stone (the central Masonic metaphor for self-refinement), and constructed his entire psychology from Gnosticism, alchemy, and the mystery traditions woven through Masonic ritual.

While there is no firm evidence Jung was himself initiated, his concept of individuation as circumambulation echoes the structure of initiation itself. – Source