Baptism at Petworth:
17 Oct 1750 William [son of] John [&] Jane TAYLOR, born 2 Oct 1750.
The above is one to consider as a candidate for Clara's father. In which case ...
Marriage at Petworth:
3 Feb 1745 John TAYLOR [&] Jane ROBERTS, Banns
Burials at Petworth:
5 Oct 1782 John TAYLOR, 61 years
11 Mar 1784 William TAYLOR [no age or further details]
Baptisms at Petworth to John & Clara HAINES:
6 Jul 1804 William Taylor, born 8 Jun 1804 [Taylor is a given name]
12 Oct 1806 John, born 27 April 1806
30 Dec 1807 Henry, born 4 Oct 1807
1 Mar 1809 Gregory, born 29 Jan 1809
Source: PRTS transcript (which spells Clara's surname "TAYLER" in her baptism record).
HTH,
Stovepipe