Prime Minister Boris Johnson and his fiancé Carrie Symonds have named their son Wilfred Lawrie Nicholas Johnson.
The name was chosen in a tribute to their grandfathers and the doctors who helped save the 55-year-old politician's life.
Ms Symonds, 32, posted a picture of her cradling the newborn on Instagram on Saturday, saying she "couldn't be happier" and that her "heart is full".
She praised the maternity team at University College Hospital in London, who she said "looked after us so well".
She wrote in her Instagram post: "Introducing Wilfred Lawrie Nicholas Johnson born on 29.04.20 at 9am.
"Wilfred after Boris' grandfather, Lawrie after my grandfather, Nicholas after Dr Nick Price and Dr Nick Hart - the two doctors that saved Boris' life last month.
"Thank you so, so much to the incredible NHS maternity team at UCLH that looked after us so well. I couldn't be happier. My heart is full."
The couple announced on Wednesday that Ms Symonds had given birth to a baby boy earlier that day.
The birth came just weeks after Mr Johnson was discharged from intensive care where he had been battling coronavirus.
