Kamil Dantes, of Hardwick Road East, is charged with killing Leszek and Malgorzata Dantes, both aged 54, on Monday 21st April.
Post-mortem examinations concluded they both died from stab wounds.
The 28-year-old spoke only to confirm his name and address through a female Polish interpreter.
He stood in the dock, slim and shaven headed.
He wore a grey hooded jumper and jogging bottoms.
Dantes was remanded into custody until the next court apperance on 13th May.