Pedigree Chart of Preamble, 1 W-Y, Guy L. Wilson, Northern Ireland, 1946

Niphetos
Preamble
Madame de Graaff
White Knight
Madame de Graaff
Brodie 1W-W seedling
Conqueror
Kanchenjunga
Weardale Perfection
Seedling 57/08
Duke of Bedford
Askelon
(King Alfred x Glory of Noordwijk)
Nevis
1 W-W seedling