Hi again
If this is the family with Maggie J in 1891, I'm not sure how your info ties up:
1891
RG12/4637/101/23
Penygraig, Froncysyllte
Robert Hughes, 62, brickmaker, b. Glynceiriog
Margaret, 58, b. Llangollen
Thomas, son, widower, 22, collier b.Llangollen (1871 census has him as 6. 1881 as 16 and the 1901 has him as 36)
Maggie J, niece, 4, b. Lancashire, Tyldesley*
gnu
* but showing as granddaughter on the 1891!