Several saints are known by this name, all too far back in time for accurate birth records to be found (not unusual for most people at that time). There was one born near Liege (now Belgium) in 1150, no date given.
Christina Leardini was born on January 22, 1969, in St. Petersburg, Florida, USA.
If you mean St. Christina of Persia, there is little known about her except that she was a martyr who was scourged to death. We do not even know the year this happened.
There are a number of saints named Christina. Please be specific.
Christina of Garmoran was born in 12##.
Christina Dodwell was born in 1951.
Christina Durinck was born in 1981.
Christina Simon was born in 1954.
Christina Courtin was born in 1984.
Christina Lustenberger was born in 1984.
Christina Zerbe was born in 1980.
Christina of Denmark was born in 1522.
Christina Reid was born in 1942.