At 23 Herbert Street, Brithdir on the 1901 census were:
Jeremiah Harrington, head, 42, gen/lab, Dowlais
Catherine, wife, 34, Dowlais
Basil J. [6]; William J. [2]; Denis [1mth] all born Brithdir
Found the following marriage [not sure if it is them but looks good]
Marriages Jun 1894
Harrington Jeremiah Merthyr T. 11a 916
O'Halloran Catherine Merthyr T. 11a 916
Help needed to locate Jeremiah & Catherine on the 1891