I Have 1861 Census and Details of My Ancestor Evans IN Merthyr Tidfil but Except for My Immediate Relatives That Went to London I Cannot Be Sure of...

They were living in Cyfarthfa 2 Chapel row with the 9 children .My grandmother was Jane,who went to London,but I am intrigued to learn about the Welsh side .
Alf (1930) Perth WA.