Features of creating surnames, derived from the surname of Did (based on surnames common in Ukraine)

The article examines the peculiarities of the creation of surnames derived from the surname Did, common in Ukraine. An overview of the scientific works of domestic linguists on the theoretical and applied aspects of the study of Ukrainian surnames was made (the works of V. Horpynych, L. Masenko, A. Popovsky, Yu. Pradid, Yu. Redko, M. Khudash, etc.), their lexicographic processing as a whole in general (V. Demchenko and I. Lopushynskyi, A. Zosimov, Yu. Redko, etc.), as well as individual regions of Ukraine, in particular (H. Arkushyn, V. Horpynych, Yu. Novikova, P. Chuchka, etc.). 
A cursory review of the scientific research of Ukrainian scientists gave grounds to summarize that surnames derived from the surname Did, as well as microsystems of surnames «Grandfather» in general, were not studied at all, even casually, in connection with the study of other problems, in Ukrainian linguistic science. 
From the system of surnames common on the territory of Ukraine, a group of surnames derived from the surname Did, which includes 173 surnames, was singled out. It was established that 33 out of 46 surnames became the basis for the creation of 127 new surnames, and no new surnames were formed from 13 surnames derived from the surname Did. 
The most common surname of the studied microgroup is the surname Didenko (19,123 speakers), and the most derived surnames are formed from the surname Didukh (20 surnames). 
The analysis of the actual material gave reasons to claim that the main method of creating surnames derived from the surname Did is the suffixation: Didukh – Didu(h/sh)-itsk-y, Didyn – Didyn-ets, Didenko – Diden(k/h)-enk -o and others (a total of 83 surnames). In one case, a more complex formula was used – the surname Did-enk-o was formed from the last name Did by a suffix method, from which the last name Didenk-ul was also formed by a suffix method, and the last name Didenkul-ov was formed from it by a suffix method. 
It is noted that the suffixes -ov (14 cases), -enk- (11 cases), -chuk(-chuk) (7 cases) are most often used to create new surnames. 44 female surnames are formed in an inflectional way from the bases of male surnames: Didushyn – Didushyn-a, Didkivsk-y – Didkivsk-a, Didenkov – Didenkov-a, etc. 
The article emphasizes the fact that surnames derived from the surname Dyed, double surnames, one of the components of which are the surnames Dіd and Dyed and surnames derived from them, rare and non-derivative surnames, the basis of which served as the basis of the surnames Dіd and Dyed, also require separate research , and some others.