forefather

n.

祖先，祖宗；

复数：forefathers

1. My forefather came to the USA 200 years ago.
   我的祖先在两百年前来到美国。
2. Avenge the slain forefather by vanquishing Major Duke.
   报复杀害的祖先主要由击败杜克。

Forefather
The forefather (about Leonid Isaakovich Mandelstam)
Hippocrates: the forefather of neurology
The Forefather Needs No Fluids: Voodoo Death and Its Simulacra
W.E.B. Du Bois: Intellectual Forefather of Intersectionality?
[Ignaz Semmelweis--forefather of antisepsis (on the 180th anniversary of his birth)].
FROM THE HISTORY OF PHYSICS: The forefather (about Leonid Isaakovich Mandelstam)
Professor Antonio Branco Lefèvre: the forefather of child neurology in Brazil
"Have We Found Abraham to Be Our Forefather According to the Flesh?"A Reconsideration of Rom 4:1
New astronomy library in Bologna is named after Guido Horn D'Arturo: a forefather of modern telescopes