Zij is getrouwd met Andreas de Graaf.
Zij zijn getrouwd op 25 mei 1898 te Grand Rapids (Kent County-Michigan-USA), zij was toen 26 jaar oud.
Wobbigje (Winnie) was Friesian. She came to this county as a young woman with her brothers. Later her father and sister joined them. She married and raised six children. All three of her daughters married doctors (PHDs). Her sons, also, were very accomplished. The oldest also held a PHD. She was a strong minded women, and a life-long member of the Christian Reformed Church.
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