Your great great-grandfather is an example of an ancestor.
King David and King Solomon are each an example of an ancestor of Jesus.
The Middle Eastern wildcat is an example of an ancestor of the modern house cat.
Origin of ancestor
- Middle English auncestre from Old French from Latin antecessor predecessor from antecessus past participle of antecēdere to precede ante- ante- cēdere to go ked- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- Middle English ancestre, auncestre, ancessour; the first forms from Old French ancestre (modern French ancêtre), from the Latin nominative antecessor one who goes before; the last form from Old French ancessor, from Latin accusative antecessorem, from antecedo (“to go before”); ante (“before”) + cedo (“to go”). See cede, and compare with antecessor.