Gilla Críst Ua Máel Eóin (anglicised as Christian Malone) (died 1127) was an Irish historian and Abbot of Clonmacnoise.
Ó Maoil Eoin (now anglicised as Malone), denotes descent from a grandson of a person baptised in honour of Saint John.
This assumption was introduced long after Maol Eoin had lived. It was contrived to demonstrate a long standing association with the Church. As such "maol" is often described as meaning bald and then quickly followed by the idea of a monks shaved head. While "maol" does mean bald it also can mean thin. However, in both cases it is used in reference with the landscape; bald might mean lacking in trees, and thin might mean a peninsula or island. It defines a feature of the landscape that is associated with the family. The use of maol, in a family name, is found recorded some 200 years before Maol Eoin was born. Maolrunaigh (Mulrooney)was a past family name that was passed down, mostly in part, through the generations. This was a common way to include the name of the bride's father, as a mark of respect. If Maol Eoin means devotee of St John, then it would stand to reason that Maolrunaigh must be a devotee of St. Rooney. However, a St. Rooney does nor exist.
The Ó Maoil Eoin were wrongly accorded kinship with the Uí Briúin, based on the statement that "Maoliosa {son of Tairrdelbach Ua Conchobair}, Bishop of Roscommon, who had a son named Maol Eoin ... a quo O'Maoil Eoin, anglicised Malone." However, the family were already in existence before Tairrdelbach was born, so the kinship is mistaken, or a deliberate forgery. There is a Malone family closely related to the O'Maoilchonaires, Mac Con Midhes, and O'Braoins, in the 21-5909-A subgroup of the DF-21 yDNA SNP, all of whom were learned families closely associated with Clonmacnoise.
They seemed to have been an ecclesiastical or Erenagh family native to the area, with no links to any great royal houses.
Gilla Críst is the earliest known member of the family associated with Clonmacnoise, been perhaps the ancestor of all subsequent Ó Maoil Eoin's associated with it.
He was associated with Tairrdelbach Ua Conchobair, as attested in an entry in Chronicon Scotorum sub anno 1124 - "The great bell-tower of Cluaín moccu Nóis was completed by Gilla Críst ua Maíleoin and Tairdelbach ua Conchobuir."