Cindy,
I looked up Thomas Conway's Church Record on RootsIreland (paid subscription)
According to that record, Thomas was born Dec. 5, 1903, and baptized Dec. 6, 1903. It is not unusual for the civil record (January 5, 1904) to be different, See article below.
Birth Records In Ireland - MyHeritage Wiki
"When civil registration was introduced in Ireland, notice of the birth had to be provided within twenty-one days and the birth had to be registered within three months. However and as expected, late registrations occurred and also, some births failed to be registered. In the early years of civil registration, it was not unusual to see baptisms of children occurring supposedly before the child was born. In order to avoid prosecution or a fee (2 shillings and six pence) for late registration, parents would often alter the date of birth of the child when registering it, which explains how a baptism could occur before the birth. Consequently, birth registrations have to be taken with a liberal dose of salt. After the Births and Deaths Registration Act was passed in 1874, the time for registering a birth was reduced to 42 days."
His sisters records are more consistent.
Mary born Dec. 2, 1902, and baptized Dec. 6, 1902, Civil record Dec. 2, 1902
Dorothy born Aug.18, 1905, baptized Aug. 19, 1905, Civil record Aug. 18, 1905. Dorothy got married in 1926- Image 3
| Party 1 Name: | Dorothy Conway |
| Party 2 Name: | Peter O'brien |
| Date of Event: | 25/04/1926 |
| Group Registration ID: | 1149318 |
| SR District/Reg Area: | Swinford |
| Image path: | marriage_returns\marriages_1926\09127\5301210.tif|marriage_returns\marriages_1926\09127\5301206.tif|marriage_returns\marriages_1926\09127\5301208.tif |
| View record images: Image 1 Image 2 Image 3 |
Regards- Mary