Ну черные волосы и глаза. это не такой уж показатель, что у Вас прям южане были в роду, хотя этот калькулятор показал у Вас:
Mixed Mode Population Sharing:
# Primary Population (source) Secondary Population (source) Distance
1 96.9% Mordovian (derived) + 3.1% North-European-Mesolithic (ancestral) @ 3.1
2 96% Mordovian (derived) + 4% Saami (derived) @ 3.17
3 96.5% Mordovian (derived) + 3.5% Bra2 (derived) @ 3.18
4 96.6% Mordovian (derived) + 3.4% Bra1 (derived) @ 3.18
5 63.2% Ukrainian-Center (derived) + 36.8% Komi (derived) @ 3.3
6 88.6% Mordovian (derived) + 11.4% Finnish-South (derived) @ 3.32
7 91.1% Mordovian (derived) + 8.9% Finnish-North (derived) @ 3.35
8 85.3% Mordovian (derived) + 14.7% Finnish (derived) @ 3.35
9 84.6% Mordovian (derived) + 15.4% Inkeri (derived) @ 3.37
10 60.4% Ukrainian-East (derived) + 39.6% Komi (derived) @ 3.39
11 94.7% Mordovian (derived) + 5.3% Roma (derived) @ 3.46
12 63% Russian_North (derived) + 37% Latvian_V (derived) @ 3.51
13 56.7% Polish_V (derived) + 43.3% Komi (derived) @ 3.6
14 60.7% Russian_South (derived) + 39.3% Komi (derived) @ 3.61
15 86.7% Mordovian (derived) + 13.3% Karelian (derived) @ 3.65
16 96% Mordovian (derived) + 4% Jew_Algeria (derived) @ 3.67
17 95.7% Mordovian (derived) + 4.3% Jew_Italia (derived) @ 3.67
18 95.7% Mordovian (derived) + 4.3% Jew_Francestrale (derived) @ 3.67
19 94.2% Mordovian (derived) + 5.8% Greek_South (derived) @ 3.67
20 95% Mordovian (derived) + 5% Italian-Center (derived) @ 3.68
в целом Вы северянка, но есть у Вас 5.3% Roma, я так понимаю цыгане, ну и чуть евреев, ц.греция, может отсюда черные волосы
.В Белоруссии, было много евреев, да и цыган не мало было, может когда то давно, кто то из предков был из этих народов.