Book  (2002)  Page(s) 280.  
 
Michael Guilfoyle (1809-1884), Exotic Nursery [established 1851]. ..... Michael's son William - who referred to his father as 'generalissimo' -  claimed he was an exceedingly strict man treating his sons with spartan severity. 

Website/Catalog  (1851)  
 
Evergreen and Perpetual [Roses]
9.  Generalissimo