| Father | Michael Nicholas Maciejewski (born 1830, died 8 February 1895) |
| Mother | Katarzvna Catherine Lamieska (born 1837, died 6 April 1913) |
| Pedigree Link |
| Daughter | Gertrude Mandy |
| Son | Bernard Ben Maciejewski (born 2 September 1890) |
| Son | Peter Paul Mandy Maciejewski (born 26 October 1892, died 24 November 1981) |
| Son | Ray Mandy Maciejewski (born 21 March 1894, died 1969) |
| Son | Allen Mandy Maciejewski (born October 1897, died 14 November 1972) |