Hi,
A lady (from New Zealand) asked me about the Savins of Yarnton only the other day. Although they are not obviosly connected to 'my' Savins (of Bletchingdon and Kirtlington, I came across the answer to your question (I think), which I can gladly share with you.
Of their 9 children (to my knowledge), Anne, the eldest, was baptised on 10.9.1826. The Anne (Savings) who married Abraham Green of Cassington on 4.11.1816 must, presumably, be the daughter of John and Jane, christened (Anne Seaving!) 16.10.1796.
I will try to attach a Word document with all this summarised in 2 tables. If it doesn't arrive, maybe you' let me have your e-address, to send it direct.
John.