20th-century coinage, of uncertain derivation. It may be a transferred use of a surname (itself of obscure origin). It seems to have been first borne by the American actor Darren McGavin (1922–2006). It came to public notice as the name of a character in the popular American television comedy series Bewitched, made in the 1960s, and has remained steadily popular ever since.
Swiss German: habitational name for someone from any of three places called Bollingen, in Schwyz, Württemberg, and Oldenburg, or from Bohlingen near Lake Constance (which is pronounced and was formerly written as Bollingen).