Marcus Allen's brother was born in May 1963.
His younger brother , Damon Allen , played quarterback for 23 seasons in the Canadian Football League and was professional football 's all-time leader in passing yards .	Damon Allen	Damon Allen	Canadian Football League	Canadian Football League
Damon Allen -LRB- born July 29 , 1963 -RRB- is a former professional quarterback who played in the Canadian Football League .	quarterback	quarterback	Canadian Football League	Canadian Football League
