Sorry Jenny, I may have to take back my comment on Holden being a mistranscription

It has turned up as a place in the Kildwick parish registers.
Found the following details from Kildwick p.r.'s
Marriage:
Thomas Wilcock of Farnhill, woolcomber, widow, to Ann Dinsdale of Kildwick, spinster on the 22/2/1802
Thomas Wilcock, of Kildwick, a husbandman, bachelor, to Jane Widdop of Holden, a spinster on the 11/11/1777 (interesting)
This Thomas was buried at Kildwick on the 7/2/1780, his wife Jane, buried on the 19/2/1780
Thomas of Farnhill, woolcomber, bachelor married a Tabitha Mason of Silsden, a minor on the 1/4/1793
They had:
son John in 1793 (12/8/1793)
son Robert in 1795
Tabitha died in 1796
Tabitha, wife of Thomas of Farnhill, a woolcomber buried on the 4/1/1796, age 20.
So it is my guess that it is this Thomas who has remarried - to Ann Dinsdale.
Issue of Thomas Wilcock and Ann Dinsdale.
Mary in 1803
Hannah in 1805
Elizabeth in 1806
state father is a woolcomber of Farnhill.
Can provide full details if you wish.
However, the marriage of Thomas and Ann is too late for your Thomas (1799) and I cannot see a Thomas born out of wedlock under the name Dinsdale. in Kildwick parish registers.
Sorry, think I have confused you even more. Will keep looking.
Margaret