At 3.06kg and 51cm Arthur was in the average weight and height range for new-born babies, said Mrs Cox.
She said Arthur's name would probably get shortened to Arty and Douglas was a family name.
Because Arthur was the first-born Christmas baby, Tauranga Hospital's Maternity staff spoiled him with a decorated bassinet, a hand-made quilt and other little goodies.
Mrs Cox said he slept well through his first night and had been feeding well. Arthur's big brother 2-year-old Angus is looking forward to meeting his baby brother and celebrating Christmas late with the rest of the family.