The plural of lumber is lumbers. As in "he lumbers around the house slowly in his underwear".
Lumber is singular. Plural would be lumbers. Lumber is used to describe wood. Lumbers is used to describe the action of being lazy and slow.
Lumbers from trees
lumbers rumbles slumber umbrels
Sugar, molasses, lumbers, fish, fruits, clothing.
furs and lumbers to sell in europe
James was born on December 17, 2007.
James Park was born in 1835.
James Lowe was born in 1796.
Dick James was born in 1920.
James Fewings was born in 1849.
James Forsythe was born in 1938.