Sieffre incazelo engcono kakhulu yegama: Unenhlanhla, Ukudala, Unika, Isimanje, Ujabule. Thola Sieffre kusho igama.
Knobbe izincazelo zegama elihle kakhulu: Ujabule, Unenhlanhla, Isimo sengqondo, Sína, Ukudala. Thola Knobbe incazelo yesibongo.
Sieffre imvelaphi yegama lokuqala. Welsh form of Geoffrey. Thola Sieffre imvelaphi yegama lokuqala.
Amagama afanayo for Sieffre emazweni ahlukene nezilimi ezahlukene: Fredo, Gaufrid, Geffrey, Geoff, Geoffrey, Geoffroi, Geoffroy, Gisilfrid, Gjord, Gjurd, Godafrid, Godefroy, Godfrey, Godfried, Godofredo, Godtfred, Goffredo, Gofraidh, Goraidh, Gottfrid, Gottfried, Guðfriðr, Jeff, Jeffery, Jeffrey, Jeffry, Jep, Joffrey, Séafra, Siothrún, Walahfrid. Thola Sieffre kwezinye izilimi.
Amagama avame kakhulu ngegama lomsebenzisi Knobbe: Adria, Guillermo, Brock, Jeffrey, Ilse, Adrià. Thola Amagama ahamba ne- Knobbe.
Ukuhambisana kwe- Sieffre kanye Knobbe kuyinto 82%. Thola Ukuhambisana kwe- Sieffre kanye Knobbe.