Louis Lesser was born on 1916-06-15.

a lesser pilgrimage is a pilgrimage that is lesser than the normal pilgrimage

The origins of scat music are unclear, so no one person can be credited with its invention. Many cite Louis Armstrong's 1926 recording of Heebie Jeebies as evidence that he invented scat, but there are many recordings of lesser-known artists who performed in this style before Louis, at least as early as 1911, when Louis was only 10 years old.

Len Lesser's birth name is Leonard King Lesser.

Yes, as in 'He was the lesser known author of the group'. Lesser can describe an adjective as in that sentence, or it can be used as a comparative, as in 'the lesser of two evils'.