"Thanks to all the amazing medical staff who took care of my wife & our daughter 🙏 I'll never forget the moment I introduced @olympiaohanian to her baby sister," he added.
He finished his caption with a quote that is seemingly an ode to his daughter's middle name: "Your peace would have been like a river, your well-being like the waves of the sea."
Williams also announced her daughter's birth in an adorable TikTok video simply captioned: "Welcome my beautiful angel." #beautiful #amazing #tiktok #peace #video #with #baby #like #the #sea #who
