Interdisciplinary research in the field of consciousness and ways of its representation using verbal and nonverbal codes seems to be particularly fruitful at the intersection of linguistics and philosophy, psychology and biology, medicine and neuroscience. Linguistic consciousness is considered in the works of E.S. Kubryakova (2012), R.I. Pavilionis (1983), L.S. Vygodsky (2018), A.N. Leontiev (1975). The information theories of consciousness in philosophy are analyzed in the works of D.A. Fodor (1987), F. Dretske (1981), D.I. Dubrovsky (2015), D. Chalmers (2013). The information theory of consciousness is applied as the basis of the conception of the spiral development of the meaning of a proper name. The concept of onomastic knowledge is analyzed, the conceptual complex structures, which serve as a basis for the mental representations of onomastic knowledge, are given. The concept of onomastic consciousness is introduced as part of the linguistic consciousness responsible for the formation and development of onomastic competence. The definition of onomastic competence is given as the ability to encode information using proper names, both of individualizing and characterizing nature, as well as the ability to manipulate proper names in all variety of systemic and discursive functions to achieve the goal of communication. The analysis of the cognitive-functional specifics of proper names is given on the examples of the novels “Piranesi” by S. Clark and “Once Upon a Time in Hollywood” by Q. Tarantino. The specifics of the proper name as an objectifier of consciousness and onomastic competence as an indicator of the formation and development of onomastic consciousness are analyzed. According to the information theory of consciousness, onomastic consciousness determines the meaning of proper names.