Researching the Oatway branch of my family I have a quandary: this person was recorded in the GRO birth record as "Ketty", but this appears to be the only occurrence of this name. Her baptism record and the 1841 census record her as "Kitty". Thereafter she and her family seem to disappear from the records for a few years, excepting her mother's death, and her father's remarriage.
The next record is the marriage of "Catherine" Oatway to John Macdonald in 1852. Later there is a death record on GRO for Catherine Macdonald in 1878, at age 37, which agrees with her date of birth in early 1841.
Which name should I use, "Ketty" as that is on the birth record, "Kitty" as that appears to be how she was known as a child, or "Catherine" as it appears she later used the expanded version of her name?