Christina van der Slik was born on the island of Goeree-Overflakkee in 1839 to Johannes Pietersz van der Slik and Jannetje Kruijthof. The history of both families on the islands is documented back to the 1500s. The van der Sliks immigrated to America in 1855, settling in Ottawa County, Michigan. Christina married GIjsbert Haan from Hilversum, Noord-Holland, Nederland. He was the son of Gijsbert Haan, founder of the Christian Reformed Church in North America, and his wife Marretje Pos. Gijsbert died in 1869 of tuberculosis, leaving her with eight small children. In 1875, Christina married Jan de Groot from Menaldum, Friesland, Nederland, the son of Eeltje Aukes de Groot and Trijntje Teuniswas.