Lady GaGa is in mourning following the death of her maternal grandfather on Easter Sunday (31Mar13).

Paul Douglas Bissett, Sr., father of Gaga's mum Cynthia, was aged 86 when he passed away just one week before his birthday on 7 April (13).

According to his obituary, published by bosses at Altmeyer Funeral Homes, Bissett was a retired insurance agent as well as a well-known local singer.

A funeral service is scheduled for Thursday (04Apr13) in West Virginia.

Gaga lost her paternal grandfather Joseph Germanotta in September 2010.