The plural of the last name "Gross" is "Grosses." When forming plurals for surnames, typically an "s" or "es" is added, depending on the ending of the name. Therefore, you would refer to multiple individuals with the last name Gross as the Grosses.
gross'
The plural of the last name Welsh is "Welshes."
The plural is Averys.
The plural is Harrises.
Gores is the plural of the family name Gore
The plural of bell is bells. As in "the bells are ringing".
gross
It can be.
The plural form is Stintzes.
The plural form of the last name Parry is Parrys, e.g.We are visiting the Parrys tonight.
If your first name was Jayne, then the plural would be JaynesIf your last name was Smith, then the plural would be Smiths
The plural possessive form of the last name Ellis would be the Ellises'.