I have reviewed the information I have about Ann:-
I started with the birth certificate of Thomas Higgins Lovatt (my ancestor) who was born 25/8/1850 in Brompton, Kent. Mother - Ann Lovatt nee Brenan, Father - John Lovatt occupation soilder 37th Regiment
In the English 1851 census John and Ann are at Chatham Barracks in Kent with 4 children including Thomas H Lovatt (aged 7 months). John is aged 41 and Ann is aged 30 therefore giving her birth year as about 1821. Ann's place of birth is given as MUNRO, TIPPERARY.
I also know from the rootsweb website regiments and infantry section that the 37th Regiment was in Ireland in 1826. John Lovatt joined the 37th Regiment in 1826 aged 16. His army papers do not show where he was between the ages of 16-18 as he was 'under age'.
I have been unable to find a marriage in england beween John Lovatt and Ann Brenan so it may be possible that they met and married in Ireland but as there was mass migration of the Irish at this time they may have met elsewhere. John's army papers show he spent 8 years in the West Indies and 2 years in South America. He was discharged from the army in July 1851 - by this this time John and Ann had 4 children.
If anyone can help with my search for Ann's birth or marriage, please message me.