An illegitimate brother & sister, seemingly raised by grandma & her 2nd husband, step-grandfather of the 2 children. At their weddings they both gave father's name as a combination of step-grandfather's 1st name + their own surname. Occupation was cotton spinner which had been occupation of (deceased) step-grandfather's occupation and which was also occupation of majority of men in the town. A son from each marriage was named after his fictitious grandfather.
Edit. I mixed up generations and put "stepfather" instead of "step-grandfather". The children were down as children of their step-grandfather on one census and with his surname. It's confusing.