hi Val,
i dont have any of them in my tree, but i had a check of the 1881 census for you.
this might be Lewis (jr) but the age is a little out...
Dwelling: 20 High St
Census Place: Avoch, Ross & Cromarty, Scotland
Source: FHL Film 0203407 GRO Ref Volume 059-A EnumDist 1 Page 4
Marr Age Sex Birthplace
Lewis JACK M 41 M Avoch, Ross and Cromarty, Scotland
Rel: Head
Occ: Fisherman
Jane JACK M 40 F Avoch, Ross and Cromarty, Scotland
Rel: Wife
Occ: Fisher Wife
Flora JACK U 16 F Avoch, Ross and Cromarty, Scotland
Rel: Daur
Occ: Gen Domestic Serv
Isabella JACK 14 F Avoch, Ross and Cromarty, Scotland
Rel: Daur
Occ: Gen Domestic Serv
Donald JACK 11 M Avoch, Ross and Cromarty, Scotland
Rel: Son
Occ: Scholar
Johana JACK 7 F Avoch, Ross and Cromarty, Scotland
Rel: Daur
Occ: Scholar
Cattherine JACK 5 F Avoch, Ross and Cromarty, Scotland
Rel: Daur
Occ: Scholar
LEWIS JACK
Spouse: JANE RALPH
Marriage: 02 OCT 1863 Avoch, Ross And Cromarty, Scotland
FLORA JACK
Female
Birth: 25 SEP 1864 Avoch, Ross And Cromarty, Scotland
Father: LEWIS JACK
Mother: JANE RALPH
ISABELLA JACK
Female
Birth: 31 JAN 1867 Avoch, Ross And Cromarty, Scotland
Father: LEWIS JACK
Mother: JANE RALPH
DONALD JACK
Male
Birth: 10 JUL 1869 Avoch, Ross And Cromarty, Scotland
Father: LEWIS JACK
Mother: JANE RALPH
JOHN JACK
Male
Birth: 17 SEP 1873 Avoch, Ross And Cromarty, Scotland
Father: LEWIS JACK
Mother: JANE RALPH
i hope this is some of the family you are looking for.
kind regards,
Lorna.