In honor of his wife's heritage, the boy was given the Dutch name of Thijs (pronounced tice). Born in a New York City hospital at 9:37 a.m. EST, Thijs weighed in at 7 pounds, 4 ounces.
Lauer, 48, worked as recently as Monday, but Lester Holt filled in for him on the NBC morning show Tuesday.
Thijs is the couple's third child. They have a 5-year-old son, Jack, and 3-year-old daughter, Romy.