According to Bill Jacobs Cadillac, the Cadillac logo is part of the coat of arms of Antoine de La Mothe Cadillac, founder of the city of Detroit, which was the birthplace of Cadillac and General Motors. Cadillac's founders paid tribute to him by using his name and crest.
The Cadillac emblem has a set of three merlette birds on one side to signify nobility on the mother's side and three merlettes on the opposite side to signify nobility on the father’s side. The birds are grouped in threes to signify the holy trinity. As iconic as the logo is, Cadillac unveiled a new variation in Jan. 2014 that dropped the emblem's wreath, which had been a part of the logo since 1902. The logo was changed in order to attract a younger demographic, as reported in Ad Age.