your querie about William Hartshorn who married minnie fredrica ponsonby his parents were:-as follows
Wikkiam Hartshorn bn 3 july 1748 basford notts england,married
catherine walsh 29 dec 1808 recorded at kew.

his parents were:-
Thomas Hartshorn bn 29 sept 1723 Arnold notts England
mattied Mary Adkinson 21 april 1747 Notts St Leodegarius.

his parents were:-Edward Hartshorn bn 14 june 1695 Notts St Peter married at notts St Peter married Ruth Newham 26 jul 1720 Arnold St Mary.

his parents were:-Richard Hartshorn bn 7 july 1661 notts St Peter.married Elizabeth Allin 3 april 1687 Notts St Nicholas

his parents were:-Edward Hartshorn bn 1630 Averham Notts
buried 1667 Notts St Nicholas.Married Mary Gunthorp 2 Aug 1652.Averham Notts.These Hartshorns are my 4th 5th 6th 7th and 8th grand parents.Hope this is of some use as it is such an old posting.Regards dennis Wardle,Nottingham england