the name Fannie/fany-what is it a substitute for?

[advent]

I am curious to know was the female name of Fannie/Fany (with variations in spelling) just a name which was given to females in later life as a substitute for their birth name? The reason that I have for asking is that in my many searches for the birth records of females with the name of Fannie/fany there does not appear to be such a given name in any of the Irish civil registration civil birth records. Do any of my good Roots chat friends have any knowledge what given name or names was later substituted with the name fannie/fany (variation in spellings).

[SmallTownGirl]

Fannie/Fanny can be short for Frances, but it can also be a name in its own right.

STG

[gaffy]

... was the female name of Fannie/Fany (with variations in spelling) just a name which was given to females in later life as a substitute for their birth name?

In some cases, not too much later. For example, a search of the 1911 Ireland census brings back over 600 children aged 0 to 10 named Fanny, so while their parents registered their proper name of Frances, the pet name Fanny was sometimes being used from the word go.

[barryd]

Lillian Road in Barnes used to be called Fanny Road but the sign was stolen so many times that they had to change the name. The Observer. Apparently named after the original builder's daughter. Barnes now in London on the Surrey side of the Thames.

[carol8353]

I know someone who was given the name Fanny at birth,needless to say she now calls herself Fae