Using 1 population approximation:
1 Welsh @ 6,91155
2 Ireland @ 8,337804
3 British_mixed @ 8,609451
4 Orcadian @ 8,883971
5 Northern_Ireland @ 9,247013
6 Scotland @ 9,320777
7 NW-England @ 9,529453
8 SW-England @ 9,689605
9 NE-England @ 9,695335
10 England_Cumberland @ 10,346361
11 SE_England @ 11,737046
12 Denmark @ 12,158244
13 Norway @ 12,437227
14 North_Dutch @ 12,56785
15 FR_Bretagne @ 12,574429
16 Central_Dutch @ 12,586338
17 German_North @ 12,699511
18 Flemish @ 13,215622
19 South_Dutch @ 13,273408
20 France_NorthWest @ 14,111816
337 iterations.
Using 2 populations approximation:
1 Welsh+Welsh @ 6,91155
2 Ireland+Welsh @ 7,543955
3 British_mixed+Welsh @ 7,619918
4 Orcadian+Welsh @ 7,800768
5 NE-England+Welsh @ 7,867883
6 SW-England+Welsh @ 7,88341
7 NW-England+Welsh @ 7,893589
8 Scotland+Welsh @ 7,894091
9 Northern_Ireland+Welsh @ 7,926177
10 Ireland+British_mixed @ 8,225293
11 FR_Bretagne+Norway @ 8,240495
12 Norway+Welsh @ 8,269197
13 Ireland+Ireland @ 8,337804
14 England_Cumberland+Welsh @ 8,369665
15 Denmark+Welsh @ 8,382025
16 Ireland+NE-England @ 8,4393
17 Ireland+Scotland @ 8,49561
18 Ireland+Orcadian @ 8,497287
19 Ireland+NW-England @ 8,537153
20 Northern_Ireland+Ireland @ 8,549832
56953 iterations.
Using 3 populations approximation:
1 50% Welsh +25% Norway +25% Welsh @ 7,061353
2 50% Welsh +25% Ireland +25% Welsh @ 7,204662
3 50% Welsh +25% FR_Bretagne +25% Sweden_north @ 7,20502
4 50% Welsh +25% Denmark +25% Welsh @ 7,220074
5 50% Welsh +25% British_mixed +25% Welsh @ 7,224652
6 50% Welsh +25% FR_Bretagne +25% Norway @ 7,231842
7 50% Welsh +25% NE-England +25% Welsh @ 7,251987
8 50% Welsh +25% SW-England +25% Welsh @ 7,265578
9 50% Welsh +25% Ireland +25% Norway @ 7,284838
10 50% Welsh +25% FR_Bretagne +25% Norway_north @ 7,289472
11 50% Welsh +25% NW-England +25% Welsh @ 7,300262
12 50% Welsh +25% Norway +25% SW-England @ 7,306696
13 50% Welsh +25% Orcadian +25% Welsh @ 7,327137
14 50% Welsh +25% Scotland +25% Welsh @ 7,334266
15 50% Welsh +25% Northern_Ireland +25% Welsh @ 7,371796
16 50% Welsh +25% Northern_Ireland +25% Norway @ 7,435216
17 50% Welsh +25% Ireland +25% Denmark @ 7,437317
18 50% Welsh +25% North_Dutch +25% Welsh @ 7,449347
19 50% Welsh +25% FR_Bretagne +25% Denmark @ 7,451993
20 50% Welsh +25% Denmark +25% SW-England @ 7,479038
13661050 iterations.
Using 4 populations approximation:
1 Welsh+Welsh+Welsh+Welsh @ 6,91155
2 Norway+Welsh+Welsh+Welsh @ 7,061353
3 Ireland+Welsh+Welsh+Welsh @ 7,204662
4 FR_Bretagne+Sweden_north+Welsh+Welsh @ 7,20502
5 Denmark+Welsh+Welsh+Welsh @ 7,220074
6 British_mixed+Welsh+Welsh+Welsh @ 7,224652
7 FR_Bretagne+Norway+Welsh+Welsh @ 7,231842
8 NE-England+Welsh+Welsh+Welsh @ 7,251987
9 SW-England+Welsh+Welsh+Welsh @ 7,265578
10 Ireland+Norway+Welsh+Welsh @ 7,284838
11 FR_Bretagne+Norway_north+Welsh+Welsh @ 7,289472
12 NW-England+Welsh+Welsh+Welsh @ 7,300262
13 Norway+SW-England+Welsh+Welsh @ 7,306696
14 Orcadian+Welsh+Welsh+Welsh @ 7,327137
15 Scotland+Welsh+Welsh+Welsh @ 7,334266
16 Northern_Ireland+Welsh+Welsh+Welsh @ 7,371796
17 Northern_Ireland+Norway+Welsh+Welsh @ 7,435216
18 Ireland+Denmark+Welsh+Welsh @ 7,437317
19 FR_Bretagne+Ireland+Sweden_north+Welsh @ 7,439261
20 North_Dutch+Welsh+Welsh+Welsh @ 7,449347
21 FR_Bretagne+Denmark+Welsh+Welsh @ 7,451993
22 Denmark+SW-England+Welsh+Welsh @ 7,479038
23 British_mixed+Norway+Welsh+Welsh @ 7,479058
24 Sweden_north+Welsh+Welsh+Welsh @ 7,480127
25 FR_Bretagne+Ireland+Norway_north+Welsh @ 7,499758
26 Ireland+British_mixed+Welsh+Welsh @ 7,513046
27 Norway+NE-England+Welsh+Welsh @ 7,515166
28 Central_Dutch+Welsh+Welsh+Welsh @ 7,517154
29 FR_Bretagne+Northern_Ireland+Sweden_north+Welsh @ 7,520105
30 FR_Bretagne+Ireland+Norway+Welsh @ 7,521557
31 Ireland+NE-England+Welsh+Welsh @ 7,53479
32 Ireland+Ireland+Welsh+Welsh @ 7,543955
33 England_Cumberland+Welsh+Welsh+Welsh @ 7,554545
34 Ireland+Ireland+Norway+Welsh @ 7,559201
35 Ireland+Norway+SW-England+Welsh @ 7,575126
36 FR_Bretagne+North_Dutch+Welsh+Welsh @ 7,583417
37 FR_Bretagne+Northern_Ireland+Norway_north+Welsh @ 7,589074
38 Ireland+SW-England+Welsh+Welsh @ 7,597027
39 Orcadian+Norway+Welsh+Welsh @ 7,598872
40 Ireland+NW-England+Welsh+Welsh @ 7,601945
230130906 iterations.