Find Ancestors

I have a quandry, and hope someone can help to solve it. In the 1841 census for my 3x gt. grandfather, William Turner b 1801, and living in Whittlesey,Cambs, there are two siblings that I do not think are part of this family, but relatives visiting on census night. They are a Rebecca Turner aged 15yrs, and a Daniel Turner aged 20yrs. The census indicates that they were not born in the county, but William had several brothers in adjascent counties, and they could have belonged to one of them
They are not with this family in the 1851, or subsequent census.
Please, can anyone, with more knowledge of searching than myself, please find an answer to this quandry
I will shortly be going out until after lunch, but will be back all afternoon.
Many,many thanks
Julia in Derbyshire

just for reference:-
1841
Name: William Turner
Age: 40
Estimated Birth Year: abt 1801
Gender: Male

Civil parish: Whittlesey St Mary and St Andrew
Hundred: Witchford (North) (Isle of Ely)
County/Island: Cambridgeshire
Country: England

Street address:

Occupation: baker

Registration district: Whittlesey
Sub-registration district: Whittlesey
Neighbors: View others on page
Household Members:
Name Age
William Turner 40 - not born in county
Eliza Turner 35 - not born in county
Eliza Turner 13
Emma Turner 10
Samuel Turner 6
Anna Turner 4
William Turner 1
Daniel Turner 10 - not born in county
Rebecca Turner 15 - not born in county



Where was William actually born, which town and county?

1851
Name: William Turner
Age: 50
Estimated Birth Year: abt 1801
Relation: Head
Spouse's name: Eliza
Gender: Male
Where born: Porthtown, Dogsthorpe

Civil parish: Whittlesey
County/Island: Cambridgeshire
Country: England

Street address:

Occupation:

Registration district: North Witchford
Sub-registration district: Chatteris
ED, institution, or vessel: 1g and 2g
Neighbors: View others on page
Household schedule number: 107
Household Members:
Name Age
William Turner 50
Eliza Turner 46 born: Charing Street, Essex
Emma Turner 30
Samuel Turner 16
Anna Maria Turner 14
William Turner 11

shows William being born in "Porthtown", the nearest I could find for this is Porthtowan in Conrnwall, do I have the correct place?

EDIT
have just checked 1861 censu and there he is noted as being born :- born: Dogsthorp, Northamptonshire, which is also shown on 1851 census so presume that his birth place is Northamptonshire!

Keeping that in mind there is the following birth which could be Rebecca ?:-

REBECCA TURNER - International Genealogical Index
Gender: Female Birth: 17 JUN 1827
Gender: Female Christening: 29 AUG 1827 Great Meeting-Independent, Kettering, Northampton, England
Father: GEO. TURNER
Mother: AMY

so did William have a brother George?

Many,many thanks to both Catherine and Rootgatherer, for taking the time to look at this for me.
To Catherine. William was indeed born in
Dogsthorpe,Northhamptonshire, but I have never seen the reference Porthtown written anywhere before. I had always read Daniel's age as being 20yrs, but have to agree with you that it could be 10yrs. Even so, I cannot find a birth for him. Rebecca, I am almost certain now was the daughter of William's brother Daniel, who lived just outside of Whittlesey in 1841. Indeed, she was also counted in her parents household census for 1841.Without seeming to let my imagination run riot, I could picture a scenario where the young Rebecca went visiting family, possibly accompanied by a young brother (Daniel), and both being counted in the Whittlesey census of William, then returning home to be counted again. I just cannot find if a Daniel, son of Daniel b 1793.
To Rootgatherer. Although William did have a brother George, it is not the one you found on Ancestry. By the way, how do you look at peoples trees on Ancestry. I have never used this facility.
Once again to you both, my heartfelt thanks for the work you have done.
Julia in Derbyshire

Working with the information above, and that provided by the kind researchers, would someone be kind enough to pick up the gauntlet, and find the Daniel of the piece for me.
I will look in tomorrow, as off to cook the tea now.
Many,many thanks
Julia in Derbyshire

Hello Julia,
The 1841 census is from ancestry. They have Daniels age down as 10 but I'm nor sure that is correctly transcribed as normally those in the house are noted in descending age so as Rebecca is 15 he should logically be older than her as his name comes first. If you look at the original record I am practically sure that Daniel is noted as (Appr.) so possibly apprentice to William who is a Baker.
I'll have another look on other census records but not easy to be sure you have the correct one, when you don't know where he was born, very frustrating this 1841 census.

Good Morning Catherine, thank you for coming back to this for me. Regarding the descending age matter, I thought this also, and also thought originally that the Daniel was 20. I can only vaguely read the 'Appr' entry on the census, and would have missed it if you had not drawn my attention to it.
As the 1841 was the first census,I know alot of mistakes were made. Perhaps in this case the enumerator assumed that Daniel's name was Turner. I cannot find a son Daniel born to any of Williams brothers or sisters, as I have now with Rebecca.
I suppose, in this case, I will have to be content to live in ignorance, which is what it will have to be. Not so my American 'cousins'., One, who is a prolific compiler, has Daniel being born in Lowestoft. I mean, and I do not think I am being unreasonable in saying this, someone who lives in Whittlesey,Cambs., suddenly has a child born in Lowestoft. No way. People did not travel around that way in this country. I think he looked for someone of the same name and time frame, and added him. In any case I found the one from Lowestoft, and followed him all through the censii, and it definitely was not him, although William's wife came from Essex, but I think this was through the 'servant' system of the time.
Again, many,many thanks for your time and research
Julia in Derbyshire

Good Morning Rootgatherer. Daniel is the brother of William, and now established as the father of Rebecca, which was my original thought, but needed confirming. I have now received a copy of a marriage certificate for 1852,for her, and it names Daniel, as her father, and the place of residence in the 1851as being the same as on the certificate.
I will have a go at the Tree thingy on Ancestry later on.
Many,many thanks
Julia in Derbyshire