In compiling the tables, the essential point is the numbering, that is, the system for determining the location of one or another individual in the genealogical table.
In the study of the ascending line of kinship, numbering is used, which was invented by a German historian of the 16th century. Michel Eisinger, improved in 1676 by Spaniard Jerome Sosa and completed two hundred years later by Stephan Stradonits.
The principle of Eisinger-Stradonits numbering is as follows: all ancestors receive a number depending on the natural order of kinship. A person whose pedigree is compiled receives the number 1, his father is number 2, the mother is number 3, the paternal grandfather is number 4, etc.
The advantages of this numbering are numerous: it is simple, it makes it possible to leave gaps without interrupting the numbering, makes it easy to find men who always have an even number, and women who are always assigned an odd number. Reading it indicates family ties between individuals, since the number of the father is a double product of the number of his children, and the number of the mother is a double product of the number of children plus one. For example, No. 13, this is a woman, mother No. 6 – (13-1): 2 = 6, her father – No. 26 (13×2); her mother is No. 27 (13×2 + 1), she is granddaughter No. 54 and 55.
This numbering is convenient when drawing up the genealogical file and tables, as it contributes, in addition to determining the place of each individual in related schemes, to save space when drawing up schemes.
J. Aboville (Abouville) numbering is considered the most effective in the study of descendants. The individual for whom the table of descending kinship is made is assigned number 1. His children repeat the father’s number with the addition of their number (in the order of birth). For example, there are three children numbered 1/1, 1/2, 1/3; Suppose that 1/1 has four children, then their numbers will be: 1/1/1, 1/1/2, 1/1/3, 1/1/4. The number of digits denotes the generation; Subsequent marriages are denoted by Latin letters.
There is an even more cumbersome numbering combining the features of the two systems described above. It is used when it is necessary to analyze large material, establish the degree of kinship between generations, reflect remarriages and delimit the sex of children.
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