Uncle's kids 1st cuz
1st cuz kids 2nd cuz
2n cuz kids 3rd cuz
3rd cuz kids 4th cuz............
your uncles great-granddaughter is your 3rd cousin. Listen, your uncles daughter is your 1st cousin, her daughter (your uncles granddaughter) would be your 2nd cousin, her daughter, (your uncles great-granddaughter) would be your 3rd cousin. CONGRATULATIONS!!!!! YOU HAVE A COUSIN.
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