There is no surname that is used only by Jews. There are many surnames that are used both by Jews and non-Jews. Therefore, any surname that is used by a Jewish family is Jewish, and any surname that is used by a non-Jewish family is not Jewish. So any surname can be both Jewish and non-Jewish at the same time.
A Jewish person may have almost any name possible, but there are no names that are traditionally both Scottish and Jewish.
Although Howell is not a stereotypically Jewish surname, any name can be a Jewish name if it is the name of a Jewish person.
Although Salada is not a Jewish surname in its origin, any name can be a Jewish name if it is the name of a Jewish person.
In Jewish law you are Jewish if your mother is Jewish. So long as you know that your mother and her mother (and her mother, etc.) isn't Jewish then you are not Jewish. There is no magical (or medical or any scientific way) to know if you're Jewish.
Gunfighters - film - was created in 1947.
The duration of Gunfighters - film - is 1.45 hours.
The duration of Gunfighters of the Northwest is 1.62 hours.
Gunfighters of the Northwest was created on 1954-04-15.
The duration of Gunfighters of Casa Grande is 1.53 hours.
Gunfighters of Casa Grande was created on 1964-04-01.
LAPD - 1995 Gunfighters was released on: USA: 1995
Gunfighters of Abilene - 1960 is rated/received certificates of: USA:Approved (PCA #19177)
Gunfighters of the Northwest - 1954 is rated/received certificates of: Finland:(Banned) (1954) USA:Approved
The Gunfighters - 1987 TV is rated/received certificates of: Australia:MA Iceland:12 USA:PG
The address of the Gunfighters For Hire is: Po Box 1124, Morongo Valley, CA 92256-1124
Tate - 1960 The Gunfighters 1-11 was released on: USA: 31 August 1960