Birdingbury / Berdingeberie / Birbury / Derbingberie

There are two entries for Birdingbury [variant spelling] in the Domesday survey [http://domesdaymap.co.uk/place/SP4368/birdingbury/] [accessed 26 January 2015], neither of which mentions cleric or church in it. White, Francis, & Co's gazetter of 1850 has: "The Church, dedicated to St. Leonard, is a small ancient edifice", which is odd, since the church had been built in 1775 [cf. infra]. [NB: was the content of this reference taken from an earlier source that recorded the earlier church here?] The Victoria County History (Warwick, vol. 6, 1951) reports the present church of St. Leonard as "built about the end of the 18th century and enlarged and gothicized in 1873", but there must have been an earlier church here since "The rectory was valued at £4 in 1291 [...] and at £7 10s. in 1535"; the only traces of an earlier building appear to be a 1615 bell and the registers, which begin in 1559. English Heritage [Listing NGR: SP4323068633] (1960) reports a "C18 stone font has baluster stem with gadrooned base and leaf-moulded bowl" here, which is the present font in use, but no trace of anything prior to the 18th century. The Birdingbury web site [www.birdingbury.org] [accessed 26 January 2015] notes: "St. Leonard’s Church dates from 1775 and the present building replaced a medieval building which had become so decayed that permission had been given to demolish it entirely. Little is known of the old building but the new church was built on the original foundations." [NB: we have no information on the font of the ca. 1291 church here].