Theodore "Laurie" Laurence, the affluent grandson of Mr. Laurence, grows up under his grandfather’s guardianship after being orphaned young. Restless and privileged in his youth, he forms a close bond with the March family, meeting Jo March at a dance where both seek respite from societal pressures. His artistic passions, particularly music, clash with his grandfather’s expectations of business or academia, sparking rebellious phases and stretches of idleness.

The March sisters profoundly shape Laurie’s development. He becomes an honorary family member, joining their activities and offering financial aid during their hardships. His dynamic with Jo evolves from playful camaraderie to unrequited love, ending in a rejected proposal. Disheartened, he drifts through Europe in self-pity before reconnecting with Amy March, whose candid challenges push him toward maturity and renewed ambition.

After Beth March’s death, Laurie and Amy find solace in each other, marrying and settling in a home named Parnassus, which transforms into a cultural hub for artists. Their marriage balances Amy’s pragmatism with Laurie’s fervor, and they have a daughter, Elizabeth "Bess," whose fragile health initially worries them but stabilizes with devoted care.

Laurie sports brown skin, curly chestnut hair, and dark eyes, his half-Italian heritage frequently linked to his spirited demeanor. Charming and mischievous, his personality is tempered by the Marches’ moral influence. He transitions from a self-indulgent youth to a dedicated family man, promoting the arts through Parnassus and fostering a creative community.

In later narratives, Laurie mentors youth and collaborates with Jo’s educational endeavors at Plumfield, deepening his ties to the March legacy. His journey epitomizes personal growth, the impact of familial bonds, and the reconciliation of individual aspirations with societal norms.