Here’s some more famous pioneering brothers:

Rene & Alphonse Caudron

Henri & Maurice Farman

Oswald, Horace and Eustace Short

Gabriel & Charles Voisin

John & Reginald Duigan

Paul & Pierre Lebaudy

Henri & Armand Dufaux

Albert & Gaston Tissandier

EDIT:
Just noticed some of these have been named already.