- COLIN SIEBERT- 31 SMITHY LANE, KINGSLEY, FRODSHAM, CHESHIRE, WA6 8ED 
- CHRISTIAN SIEBERT- Born December 1953 - 7-9 STRUTHWEG, KAUFUNGEN, GERMANY, 34260 
- BIRGIT SIEBERT- Born August 1971 - DIE BOENE 15, EBSDORFERGRUND, HESSEN, GERMANY, 35085 
- DOMINIK SIEBERT- Born April 1983 - 7 MELANCHTHONSTR., HAMBURG, GERMANY, 22525 
- MARTIN SIEBERT- Born March 1983 - ALBERSDORFER WEG 21A, 04420 MARKRANSTAEDT OT SEEBENISCH, GERMANY 
- KAJ WIK SIEBERT- Born July 1973 - FLAT 2, 16 ENDELL STREET, LONDON, UNITED KINGDOM, WC2H 9BD 
- Louise SIEBERT- Born September 1978 - 424 Chester Road, Little Sutton, Ellesmere Port, Cheshire, England, CH66 3RB 
- Richard SIEBERT- Born May 1967 - Stonemead House 95 London Road, Croydon, Surrey, United Kingdom, CR0 2RF 
- BEATRICE SIEBERT- 21 SMITHS FIELDS, RAYNE, BRAINTREE, ESSEX, CM77 6BX 
- DAVID SIEBERT- Born September 1981 - 21 BUSHBYS PARK, FORMBY, LIVERPOOL, MERSEYSIDE, ENGLAND, L37 2EE 
- MATTHEW SIEBERT- Born September 1967 - 7TH FLOOR 90 LONG ACRE, LONDON, UK, WC2E 9RA 
- BENEDIKT SIEBERT- Born February 1996 - 180 STRAND, LONDON, UNITED KINGDOM, WC2R 1EA 
- TILMAN SIEBERT- Born March 1970 - 10 QUEEN STREET PLACE, LONDON, EC4R 1BE 
- SOEREN SIEBERT- Born June 1975 - 45 MOHRENSTRASSE, BERLIN, GERMANY, 10117 
- SEBASTIAN SIEBERT- Born August 1977 - 90 LONG ACRE, LONDON, ENGLAND, WC2E 9RZ 
- DANIELLE SIEBERT- Born March 1988 - 24-26 GREAT SUFFOLK STREET, LONDON, ENGLAND, SE1 0UE 
- HILMAR SIEBERT- Born June 1961 - LANDGRAFENWEG NO 6, MARBURG, D 35041, GERMANY, D-35041 
- PIOTR SIEBERT- Born February 1981 - 36 BARNSLEY STREET, LONDON, E1 5RB 
- KARIN SIEBERT- Born March 1981 - IVY COTTAGE BULLOCK STEADS FARM, PONTELAND ROAD KENTON BANK FOOT, NEWCASTLE UPON TYNE, UNITED KINGDOM, NE13 8AH 
- KAJ WIK SIEBERT- FLAT 2, 16 ENDELL STREET, LONDON, UNITED KINGDOM, WC2H 9BD