This is from Ancient Faces at https://www.ancientfaces.com/photo/grown-children-of-thomas-darling-group-portrait/404638
Contributor there writes "Group photo of all the brothers and sisters of Thomas Darling fathering. Undated. G.W. Darling was born in the 1830s - he looks like he's in his 30s on here, maybe. So, I figure it was taken around the 1870s or 1880s at the latest."