Conversation so far:
Where was Irving Thalberg born?
Irving Thalberg was born in Brooklyn.
When was Irving Thalberg born?
Irving Thalberg was born on May 30, 1899.
Who were Irving Thalberg's parents?
Irving Thalberg was born in to German Jewish immigrant parents, William and Henrietta (née Haymann) Thalberg.
Did Irving Thalberg have any siblings?
Irving Thalberg had a sister, Sylvia Thalberg.
Where did Irving Thalberg attend school?
Irving Thalberg graduated from Bushwick High School.

Question: What else is significant during his early years?
Self-contained rewrite: What else is significant during Irving Thalberg's early years besides birth, parents, sibling, and school?