Many sources say his birthday is 1727. One source indicates an earlier brother with the same name (see Jacob Klaasz Ursem) who died in infancy, which may be the cause of the confusion.
Middle name might be any variation of Klaaszoon, Klaaszn, Klaasz, Klaas, Claaszoon, Claaszn, Claasz, Claas, Claeszoon, Claeszn, Claesz, Claes, etc.
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Jacob Klaasz is 31 degrees from Herbert Adair, 31 degrees from Richard Adams, 32 degrees from Mel Blanc, 26 degrees from Dick Bruna, 34 degrees from Bunny DeBarge, 39 degrees from Peter Dinklage, 34 degrees from Sam Edwards, 32 degrees from Ginnifer Goodwin, 35 degrees from Marty Krofft, 29 degrees from Junius Matthews, 29 degrees from Rachel Mellon and 30 degrees from Harold Warstler on our single family tree. Login to find your connection.