I have an (extraordinarily helpful) banns record from Llanfair Nant Y Gof in Pembrokeshire in 1825, transcribed as follows:
(Page 2) The year 1825 & 1826 [No. 3] Banns of Marriage between John James of the chapelry of Llanvair Bachelor aged 25, lived with his father at Trecwn Mill during that period, and Anne John of Little Newcastle Parish, Spinster, aged 20 and lived with her father in Little Newcastle Village during that period.
1st time, Sunday 31st of July by William Edwards Minister
2nd time, Sunday 7th of August by William Edwards Minister
3rd time, Sunday 14 of August by William Edwards Minister
It isn't clear to me what the phrases in bold mean. Are they referring to the banns period (July/August 1825) or the lifetime of the intending spouses?
Elsewhere on the same page of the Banns register (entries by the same minister), we find the same phrase repeated, but also "having lived there ten months", "lived there eleven months", "lived there nine years" and "lived there all that period".
The previous page in the register (which is the first) contains similar phrases; the subsequent pages contain only the expected information (and were filled in by a different person).