generation-identifier
The generation-identifier is a prefix of relationship (father, mother, parents, child, aunt, uncle, …) and describes the difference of generations between those two persons.
generation identifier abbreviation 1 2 grand Gr 3 (1st) great-grand UGr 4 2nd great-grand Al 5 3ed great-grand AlGr 6 4th great-grand AlUGr 7 5th great-grand Ob 8 6th great-grand ObGr 9 7th great-grand ObUGr 10 8th great-grand St 11 9th great-grand StGr 12 10th great-grand StUGr 13 11th great-grand Ah 14 12th great-grand AhGr 15 13th great-grand AhUGr 16 14th great-grand UAh 17 15th great-grand UAhGr 18 16th great-grand UAhUGr 19 17th great-grand Er 20 18th great-grand ErGr 21 19th great-grand ErUGr 22 20th great-grand ErAh 23 21st great-grand ErAhGr 24 22nd great-grand ErAhUGr
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Last update: 12/21/2016