The name occurs more than once. There was a son of Menashe (Manasseh) named Yair (Numbers ch.32). This Yair was a grandson of Joseph and was apparently still living in the time of Moses.
A second Yair, in the time of the Judges, was a man from Gilead. He was a matrilineal descendant of Machir son of Menashe (1 Chronicles ch. 2); and he judged the Israelites for twenty-two years (Judges 10:3-5). He was among the judges who lived after Deborah and Gideon, and before Yiftach (Jephthah).
Another Yair, of the tribe of Benjamin, was the father of Mordecai (Esther 2:5). He lived at the time of the First Destruction.
Yair Farm was created in 1999.
Yair Auron was born in 1945.
Yair Hurvitz died in 1988.
Yair Hurvitz was born in 1941.
Yair Dalal was born in 1955.
Yair Garbuz was born in 1945.
Yair Galily was born in 1970.
Yair Kraidman was born in 1932.
Zvi Yair was born in 1915.
Zvi Yair died in 2005.
Yair Golan was born in 1962.
Yair Bacharach was born in 1639.