Sie ist verheiratet mit Andreas de Graaf.
Sie haben geheiratet am 25. Mai 1898 in Grand Rapids (Kent County-Michigan-USA), sie war 26 Jahre alt.
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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