| Female Helena Margaretha Johan | 
| Birth | 08 Feb 1878 | Modjokerto, Java, DEI  | 
| Death | 31 Dec 1941 | Magelang, Java, DEI  | 
| Burial | ||
| Marriage | ||
| Other Spouse | Eduard van Bokhorst | F6565 | |
| Marriage | 12 Oct 1897 | Modjokerto, Java, DEI  | 
| Father | Hendrik Johan | F5510 Group Sheet | |
| Mother | Theodora Wilhelmina POLAND | F5510 Group Sheet | |