The possessive form is Lucas's. Example:
Lucas's brother is coming with us.
Lucas Lee Caldwell is 6' 9".
Lucas Till's middle name is William.
Lucas Younes's birth name is Lucas Younes de Araujo.
Lucas Mass's birth name is Lucas Patrik Alexander Hellberg.
Josh Lucas is a/an Actor
I always go with Lucas's and then use Lucas' as the singular possessive. As for plural Lucas possessive, I just try to avoid those scenarios. I wouldn't use Lucas's'. That just looks ridiculous.
Whilst it is more common to see it just with an apostrophe on the end, e.g. Lucas', it is actually more correct to write it with an extra s, e.g. Lucas's.
It is 'Lucas'. Joe Lucas, Nick Lucas, Kevin Lucas and Frankie Lucas.
Lucas da Silva Lucas was born on 1980-11-25.
The address of the Lucas Branch is: 34 W. Main St., Lucas, 44843 9701
The cast of A Star for Lucas - 1999 includes: Lucas Towstego as Lucas
lucas jerry till
George Lucas
Lucas Lee Caldwell is 6' 9".
Lucas Till played the bot in you belong with me. He also played Travis in Hannah Montana: The Movie
Lucas Till's middle name is William.
Ted Lucas's birth name is Theodor Lucas.