That is the baptism suggested in Burchall's Transcriptions.
1747 Jul 25 Bond of Joseph NEWINGTON, gent, tp for a bastard son on Mary FEVER, widow, tp
(Par.492/34/3/9) [Joseph NEWINGTON married 1 Dec 1729 at Ticehurst, Mary TOMPSETT;
Thomas FEVER married 10 Dec 1730 at Lamberhurst, Mary TYHURST].
William base born son of Widow FEVER baptised 19 June 1743.
Maybe the fact he was a gent held some sway?