I have a hunch his mother was Jennifer/Jenny etc
Marriage
John Honey / Jenny Mannear 26 Jul 1823 St. Dennis, Cornwall
1841 census St Dennis- John jnr is in lodgings 2 addresses away from this entry - occ apprentice mason
Trelaw Downs
John Honey 45 agric labourer
Jane 15
Susan 10
Mary 4
HO107 Piece 146/7 Folio 14 Page 3
From the IGI Beta site
Susan Honey Baptism/Christening Date: 22 Mar 1830 St. Dennis, Cornwall
Father's Name: John Honey Mother's Name: Jenefer