pitamahena
pitāmahena — by the grandfather;
SB 1.17.43-44
pitāmahena api — and by the grandfather;
SB 6.4.11
pitāmahena — by my grandfather, Lord Brahmā;
SB 8.16.58
pitāmahena — by his grandfather Yuvanāśva;
SB 9.7.1