(CNN) - While the world's eye was on the royal baby Monday, plenty of other children came into the world, including Mitt Romney's latest grandchild–also a boy. "#22," he notes in his tweet.
In a nod to Prince William and the Duchess of Cambridge, Romney said his family is also "royally blessed."
The new Romney baby belongs to Romney's son, Josh, and his wife Jen. In February, Craig Romney and his wife, Mary, had twins.
Romney has five sons.