Book  (Apr 1999)  Page(s) 393.  
 
Defiance Hybrid Tea. E.G. Hill 1907. Parentage: 'Lady Battersea' (Hybrid Tea) x 'Gruss an Teplitz' (Bourbon). The author cites information from different sources... A huge, rich red Rose...

Book  (1936)  Page(s) 198.  
 
Defiance (HT) E. G. Hill 1907; L. Battersea X Gruss an Teplitz; scarlet-vermilion, large, very double, floriferous, growth 7/10.

Magazine  (27 May 1911)  Page(s) 254.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Defiance... Hybrid Tea, Hill, 1908, Lady Battersea X Grüss an Teplitz

Website/Catalog  (1911)  Page(s) 3.  
 
New Roses 1911
Hybrid Tea.  Defiance  crimson scarlet, full, and of large size; very floriferous. 

Magazine  (Feb 1907)  Page(s) 8.  
 
Neuste Rosen für 1907. (Die Beschreibungen sind die der Züchter.)
Züchter: E. G. Hill, Richmond.
Defiance (Teehybride). Eine grossartige Gruppenrose, rein scharlachzinnober, sehr gut gefüllt und gross, reichblühend, schnellwachsend, herrliche Blumen bringend. (Lady Battersea X Gruss an Teplitz.) Grösser als Teplitz.