He married Elizabeth Martin, daughter of the Reverend Hartstonge Martin of Cashel, County Tipperary and his wife Susan Wemyss, in 1758, and had one surviving son, also named Christopher, who became a clergyman, and served as rector of Granard, County Longford. The younger Christopher married Elizabeth Langrishe, daughter of the leading politician Sir Hercules Langrishe, 1st Baronet and his wife Hannah Myhill, and had several children, including Hercules, an Admiral, who was the father of Hercules Robinson, 1st Baron Rosmead , and Sir Bryan Robinson, who was a judge like his grandfather, based in Newfoundland.Lodge p.75
