Hi Simone
Looking on the census returns, I'm not sure if this might be your guy:
1841 CensusLe Catel, Guernsey (HO107/1460, p27)
Rachel Queripel Charwoman 55 Born in same Island
James Queripel 20 Born same island
Nicolas Queripel 15 "
Pierre Robert 15 "
Jean Le Patourel 1 "
Elizth Robert 7 "
1851 Census (HO107/2531, f139, p21)
Croute, Vale, Guernsey
Rachel Queripel Head Widow 69 Pauper born Guernsey, St Peter's du Bois
John Le Patounel Grandson 12 Papuer born Guernsey, Catel
1861 Census (RG9/4377, f18, p2)
Le Catel, Guernsey
Rachel Queripel Head Widow 79 Charwoman born Guernsey, St Peter's du Bois
Rachel Queripel Daur Unmar 58 Charwoman born Guernsey, Le Catel
Selina Marghard Grandaur Unmar 16 Servant born Guernsey, Le Catel
Jean Le Patounel Grandson Unmar 22 A Lab born Guernsey, Le Catel
Also, on the 1871 Jean and Elizabeth are married and there are 3 stepsons listed - Francis B Lilly, Joseph C Lilly and Charles W Lilly. So looks like Elizabeth was married before?!
Hope this is of some help to you and hasn't confused you further!!

It might be worth doing a seperate post for a birth look-up for Jean?
Rowena