I have spent many years trying to find one particular family and them changing their name from GRECO to GREGORY when they came to Australia didn't exactly help.
When I found a 2nd marriage in Aus his mother was listed as Agnes ESTA his eventual BC revealed his mother was in fact Angelina PODESTA.
Then came the 1881 census of Wales, I knew the family was there but couldn't locate them under any variant of GRECO. Eventually I decided to search using just Angelina's first name and there they were in Newport Monmouth under the name of GLUCO OR GHEEN. On checking the image the name certainly looks like GLUCO or GLECO.
I must say this family is still giving me grief.
Cheers
Genni