Cây tương tác của Hermann Theis
1866–1936♂ Hermann Theis
1884–1946♀ Margaret Jane Weyda
1859–1931♂ Charles James Weyda
1862–1896♀ Louisa Elizabeth Munday
1837–1876♂ Charles Weyda
1826–1876♀ Margaret Burman
1798–♂ John Michael Weyda
1800–1846♀ Ann Elizabeth Ames
1836–1889♂ Alfred Munday
1842–1905♀ Mary Ann Abigail Daniels