And there's me thinking I was the only one sad enough to be sitting at my PC at 7.30 on a holiday....
Thanks for the BVRI info - and yes, some of it is way out.
1833 for Eliza just doesn't work. She was 4 in 1841, 14 in 1851 (transcribed by Ancestry as 12, but the image says otherwise!) etc, and I have her memorial inscription as follows: "In Loving Memory of Lizzie Chandler. The Beloved wife of George Chandler, who peacefully passed away June 27 1921, aged 85 years. "Forever with the Lord". Perhaps she was 3 MONTHS rather than years at baptism - her birth could have been the trigger for the multiple baptism on 18 Sept 1836. (And how's this for a coincidence? Her husband George Chandler was baptised on exactly the same day in Marston Moretaine!)
1831 for Sophia is plain wrong. She was 1 in 1841. And not 10 till 1851! (Mistranscribed by Ancestry as 6.) I wonder if, like Eliza, her age at baptism was 10 months and was simply misread?
And as for Rebecca! Words fail me. Actually they don't - if you think about how things were physically written down, "4" could be misread as "41" - I have just seen a "4" on a census page with its downstroke written so far to the right it could easily be misread. That accounts for 1795!
Emma seems to have died in March 1851 - I haven't confirmed with a cert, but she is on FreeBMD thus:
Deaths Mar 1851
ARMSTRONG Emma Bedford 6 16
I had noticed that males and females are listed in separate batches in some parishes - J and K seem to be the prefixes. And I am pretty sure the Ravensden batch IS new - when I first looked at these Armstrongs about 6 years ago, there weren't any Ravensden baptisms. And Hugh Wallis doesn't list it, as you say.
As for JP's William 1791-ish, he DOES say Ravensden in two consecutive censuses. However, it's always worth remembering that even the images we see in the enumerator books are already first generation copies - and as some of the enumerators were practically illiterate, I can see how Gravenhurst could be misread as Ravensden. And of course the Ancestry transcripts are dreadful. I subscribe to the Genealogist and British Origins for more reliable transcripts!
The IGI has the baptism I put up yesterday - William the son of Thomas Armstrong and Phoebe Wisson was baptised in Upper Gravenhurst. In 1851 a Thomas Armstrong b 1799 with his wife Mary is in Upper Gravenhurst, with Phoebe his mother also in residence. His birthplace is given as Upper Gravenhurst, so at the time of his birth in 1799, Thomas Snr and Phoebe were not in Ravensden - indicating they are unlikely to have been there in 1791 either. And certainly in 1841 Thomas Snr and Phoebe and Thomas Jnr, Mary and all the little Armstrongs were definitely in Upper Gravenhurst.
So the William 1791 born in Ravensden and living in Thurleigh in 1851 is likely to be a completely different person to William the son of Thomas and Phoebe. Thomas and Phoebe's family didn't move, so if William went travelling it must have been alone, perhaps looking for work. Even in his teens he would surely have known where he had been born? I can see a confusion between UG and Ravensden if the whole family had moved from UG to somewhere else, and the only knowledge he had of his birthplace was what he had been told as a child and perhaps misunderstood or misheard.....
Following in the tracks of you and JP, it seems that the "Ravensden" William married Elizabeth Franklin in Wilden in 1816. Eilizabeth was a Wilden girl, probably the daughter of Thomas Franklin and "Trew" and b about 1796. They had a son William in 1822. Elizabeth died in 1825. William then married Ann Wrench nee Gammons in Thurleigh in 1827 - probably he needed a wife to look after his little boy (and there could also have been other children who had left home by 1841) William and Ann had three children - Sarah 1828, Thomas 1831 and Eli 1835.
So who was this William Armstrong? Wilden is only yards from Ravensden. Thurleigh is also very close. On purely circumstantial evidence, I would put him as a son of John and Sarah in preference to the documented son of Thomas and Phoebe- if he really was born in Ravensden, and he seems convinced he was, then he is 90% likely to have been an undocumented child of John and Sarah - they were the only Armstrong couple having children in Ravensden at that time.
Oh dear - and now to add insult to injury, in addition to the IGI messing me about, my broadband connection is playing up so goodness knows when I can send this!