The Jees are vary distantly connected to me by marriage. The best source of info on the circus families i have found is "Victorian Arena-the Performers by the late John Turner.Briefly he gives Amelia Jee probably the daughter of Henry Bonfanti (Jee) sister of Belvina, Virginia and James Jee. She performed as Amelia Bonfanti
Belvina Jee, Equestrian, married George Hugh Holloway 1892. Charles Jee Equestrian pos brother of James Henry Jee. Frederick Burnell Jee acrobat second son of Joseph Jee who married Miss Burnell, brother of Joe Harry and Bert performed as the Burnells.Poss a daughter Charleen. Harry Jee musical clown. James Henry Jee married Ellen Bowden 1865 had daughter Virginia and son James.Lilly Jee poss married into the Deacon Family ;performed as Lilly Deacon.
Marie Jee equestrienne. William Jee brother of JOseph died 18th Jan 1885. The trouble as you realise is that they did not originate in the UK they seem to have arrived from Germany but the Name Belfonti suggests Italy but the german boundary at the time would have included part of the current Italy. I haven't traced them on any Census, which could indicate they were performing abroad at the time. Hope this provides clues that could lead to more concrete info.