Police are continuing to question a 25-year-old man arrested on suspicion of murdering two women in Sheffield.
The women have been named locally as Tracy Donnelly, 42, and her 23-year-old daughter, Louise Donnelly.
Police discovered the bodies at an address on Ironside Road in the Gleadless area of the city on Tuesday morning.
A four-year-old boy was also at the house and is now being cared for.
It has emerged from colleagues of Louise Donnelly, who worked at the New Inn pub in Hemsworth, that she was pregnant with her first child.
Jacqueline Woonton, landlady of the pub said: "She told me she was pregnant, she was excited and she was going to have a scan in a few weeks.
"She was very bubbly, a very happy woman. She was liked and loved by everybody."
Post-mortem examinations are due to be carried out.
Officers said they believed the pair died as a result of a domestic incident and the wider public were not in any danger.
Police were called to the three-bedroom house on Tuesday morning.
Alex Green, 23, who lived locally, said a couple had been heard arguing a couple of days previously.
"I know a neighbour who said he heard both women screaming, then one woman stopped and then the other one stopped," Mr Green said.
"They [a man and woman] had been arguing a few days before, there had been a lot of shouting. And then last night one of the neighbours saw someone come out with no shoes on and got into a car and drove off."
The house remains cordoned off, although some residents have been allowed through to lay flowers at the scene.