Spouse

1st: Eliza Frances Voorhees McKim (1837-1889 m. 1860)

2nd: Lydia Hollingsworth Morris McKim (1857-1936 m. 1893)

Parents

William Duncan (1808-1879)

Margaret D. Hollins McKim (1810-1887)

Siblings

Isaac McKim (1839–1872)

Children

Randall McKim (1867–1896)

Margaret Hollins McKim Steele (1869–1939)

Isaac McKim (1871–1898)

Smith Hollins McKim (1873–1932)

Louis McKim (1875–1950)

Anne Voorhees McKim (1879–1967)

Mary Camilla McKim