Hello….
The marriages will be useful after 1837, prior to that they didn’t give much detail, if you know which church the marriage took place you can print them off for 40p
The baptisms won’t necessarily give much extra detail so after 1837, I think you would be better having the birth certificate.
On the NFHS burial index I didn’t find any of the people you mention, but they do have other cemetery records at Nottingham Archives, for some reason they have changed their website lay out…..I can’t find anything as easily now....but that might be me
From the Nottinghamshire NFHS index
Marriages - Nottingham St Mary
William Whittley & Lavinia Sarah Parr, 11th July 1843
Thomas Fox & Mary Ann Martin, 16th July 1854
Baptism - Nottingham St Peter
John Parr Whittley, baptised 23rd November 1845 – parents William & Lavinia Sarah Whittley, occupation Warehouse Man, abode Greyfriar Gate.
Baptism - Nottingham St Mark
William Whittley, baptised 20th April 1865 – parents William & Lavinia Sarah Whittley, occupation Warehouse Man.
Baptism - Nottingham St Mary
Lavinia Sarah Parr – baptised 16th June 1815, parents; John & Ann Parr, occupation Publican, abode Parliament St.
Possible marriage?
Nottingham St Mary – 5th April 1814
John Parr & Ann Hallam
Best Wishes
Sheila.