On the ninth of that month a son was born at Casa Guidi, who six weeks later was described by his mother as "a lovely, fat, strong child, with double chin and rosy cheeks and a great wide chest." He was baptised, with the simple Lutheran rites, Robert Wiedemann Barrett--the "Wiedemann" in remembrance of the maiden name of Browning's mother.

From the first, Browning and his wife, to adopt a phrase from one of her letters, caught up their parental pleasures with a sort of passion.[45] Mrs Browning's letters croon with happiness in the beauty, the strength, the intelligence, the kind-hearted disposition of her boy.
And the boy's father, from the days when he would walk up and down the terrace of Casa Guidi with the infant in his arms to the last days of his life, felt to the full the gladness and the repose that came with this strong bondage of his heart.

When little Wiedemann could frame imperfect speech upon his lips he transformed that name into "Penini," which abbreviated to "Pen" became serviceable for domesticities.

It was a fantastic derivation of Nathaniel Hawthorne which connected Penini with the colossal statue in Florence bearing the name of "Apeninno." Flush for a time grew jealous, and not altogether without cause.
But the joy was pursued and overtaken by sorrow.

A few days after the birth of his son came tidings of the death of Browning's mother.