Tom Brokaw welcomed a grandson on Monday, a spokesperson for NBC confirms to PEOPLE.
The NBC News Special Correspondent's daughter, Sarah Brokaw – a licensed therapist specializing in relational dynamics and a New York Times best selling author – gave birth to Archer Thomas Merritt Brokaw.
Sarah's book, Fortytude: Making the Next Decades the Best Years of Your Life – through the 40s, 50s and Beyond, explores the core values of aging.
Archer is the first grandson born to the news anchor, 73, who has six granddaughters.
With Reporting by CHARLOTTE TRIGGS