Parentage problems!

[iolaus]

The youngest person to give birth (via section) was 5 (Lina Medina) - in the 1930s

The cases are rare but an 11 year old conceiving is not impossible (unfortunately it is likely to be as a result of incest and/or rape), while most of this list are more modern this list has several from the time period you mention - and all 10 or under -https://en.wikipedia.org/wiki/List_of_youngest_birth_mothers

I've known an 11 year old be pregnant with twins (12 when they were born)

[PaulineJ]

So what would the latinised version of the Germanic-rooted Amelia be?

[avm228]

So what would the latinised version of the Germanic-rooted Amelia be?

Just “Amelia” by the looks of it, by a quick skim of online Catholic baptisms (Liverpool ones being my sample - lots of examples of parents as Ricardi/Amelia, Jacobi/Amelia etc).

Re an earlier post, Helena(e) certainly was used to Latinise both Ellen and Eleanor.

[roopat]

Are you sure Amelia was her only forename? Could her first name have been Helen? My grandmother was Lucy Elizabeth but appears with the 2 names transposed in several censuses/documents & was known by the family as Liz. In my husband's line there are siblings with very similar names. Not to mention a friend whose brother was called Tony Anthony....

[itsrobert]

I can’t say for certain, but she was always simply Amelia on every record I have ever seen her on. So I have no idea if she had a second forename unfortunately.

[PaulineJ]

I can’t say for certain, but she was always simply Amelia on every record I have ever seen her on. So I have no idea if she had a second forename unfortunately.

So list which records those are, with their dates & sources!

[avm228]

Re “about 12” - are you able to ascertain exactly how old Ellen would have been at the relevant time?  Do you know what became of her?

[Milliepede]

Have you the exact birth dates for Amelia and her sister to ascertain exactly how old they both would have been on 5th August whatever year John was born?

[itsrobert]

Yes, I’ve got both birth certificates. Amelia would have been just over 19 years and 4 months. Ellen would have been 11 years and 11 months.