This American surname Mefferd is a variant of German and Dutch surname: Meffert.
There could perhaps be of English origin. Perhaps a variant of Rare English surname Mefford, which is perhaps could be a variant of English surname Maddaford of Devon, Medfordperhaps from Yorkshire, or Mitford of Northumberland.
See related links below for more info.
Spanish
Germany
It is Spanish.
It's French
Spaniard, italian and celtic origin.
This surname Olsen is of Danish and Norweagian origin.
Spanish
This surname Bombardier is of French and Italian origin, the surname is mostly found in Canada.
Penilla
The surname "Lamb" is of English origin. It is a common surname in England and may have originated as a nickname for someone who resembled a lamb in some way, such as being gentle or meek.
Ferreira is a Portuguese and Galician surname.
England
Italian
I believe it is armenian.
Germany
Armenian
It is Spanish.