11C1R from Eelthye Wyts Siccama (ca 1550 - bef 1621) and Yme Pieters (ca 1560 - ca 1633).12C1R from Drewes Iwema (ca 1532 - 1583) and Reencke (ca 1540 - ?).13C1R from Harcko Iwema (1485 - ?).
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