1861 has at 5 John Street:
Thomas Caren 45 Shoemaker b. Douglas
Isabella Caren wife 47 b. Douglas
Elizabeth Daughter unm. 21 b. Douglas
Isabella daughter unm. 19 b. Douglas
Robert son 12 b. Douglas
Emma daughter 8 b. Douglas
William son 6 b. Douglas
John Roney grandson 1 born Douglas
And at Duke Lane John Roney unm 20 boatman
b. Doulas son of Arthur & Mary Roney, both born in Ireland.

One possibility is that in 1881 Isabella Roney had reverted to her maiden name of Caren and, as her mother was still alive, described her own three childen as grandchildren.