Established 1867 by Jean Ketten (1841-1922) and Evrard Ketten (d. 1912), who apprenticed at Soupert & Notting.
Succeeded 1912 by Jean Ketten (d. March 21, 1937), son of Evrard Ketten and Charles Ketten, cousin of Jean Ketten.
Francine Cocard says that Ketten Bros.
, just like Gemen-Bourg and Soupert & Notting, were breeders from Limpertsberg, a (then) suburb of Luxembourg-city.
[From Roll Call: The Old Rose Breeder, p. 258:]
One brother's name was Jean Ketten, who lived 1841-1922 Luxembourg
[From Der Rose Zucht und Pflege by Olbrich, 1903, p. 253:] Johann Ketten, co-owner of the firm Gebr. Ketten, rosarian in Luxemburg, born June 1, 1848, died Mai 11, 1892.