Adam Kightley, aged 23, and 21-year-old Jackie Parker, both from Northampton, appeared at Northampton Magistrates’ Court on Thursday afternoon.
The hearing lasted only a few minutes and the pair are due to appear at Northampton Crown Court later in the week.
Seven-week-old Jamie Kightley of London Road, Far Cotton died at Northampton General Hospital on Saturday, March 17, last year.
Seven-week-old Jamie died on Saturday, March 17, last year.
Both are due to appear at Northampton Magistrates’ Court this afternoon.