To pluralize a last name, generally add an "s" to the end of the name without changing the spelling of the name. If you are talking about a whole family, such as the Smith family, call them "the...
In most cases, names are pluralized using the same rules as common nouns. For example, Bellini, simply add 's' making it the Bellinis.
Add an apostrophe - Russ'
my name is elly so Elly's
Usually Jim or Jimmy is short for James