Willem Lengkeek was born 1852 to Arie Lengkeek (1810-1866) and Elisabeth Simmonse (1809-1871) and died 1921 of unspecified causes. He married Magdalena Cornelia van den Akker (1854-1915) 10 May 1877 in Bleiswijk, South Holland, Netherlands.
Willem Lengkeek, ca 1880
Willem Lengkeek, ca 1890
Willem Lengkeek (1852-1921) and Magdalena Cornelia van den Akker (1854-1915), ca 1910
Children
| Name | Birth | Death | Joined with |
| Geertruida Maria Lengkeek (1878-1915) | |||
| Adrianus Cornelis Lengkeek (1879-1954) | 1879 | 1954 | Clara Johanna Lengkeek (1877-1962) |
| Magdalena Cornelia Lengkeek (1886-) | |||
| Arie Lengkeek (1889-1965) | 1889 | 1965 | Barbara Uittenbogaard (1889-) |
| Willem Lengkeek (1891-1896) | |||
| Trijntje Wilhelmina Lengkeek (1895-1987) | |||
Siblings
| Name | Birth | Death | Joined with |
| Cornelia Lengkeek (1834-1836) | |||
| Jacobus Lengkeek (1837-1914) | |||
| Cornelia Lengkeek (1838-1872) | |||
| Jacob Lengkeek (1840-1914) | |||
| Arie Lengkeek (1843-1919) | |||
| Frans Lengkeek (1845-1921) | |||
| Pieter Lengkeek (1847-1850) | |||
| Pieter Lengkeek (1850-1932) | 1850 | 1932 | |
| Willem Lengkeek (1852-1921) | 1852 | 1921 | Magdalena Cornelia van den Akker (1854-1915) |