Standard English The Lashes live here in this house This is the Lashes's house In some regions and in some stylebooks, the final "s" of the possessive is eliminated: The Lashes' house. When you write for a formal website or business, you should ask what style they use for the inclusion or exclusion of the final "s" of the possessive on names that end in an "s". And in almost all cases, old-timey names (Jesus, Moses, Socrates) never get the final "s": Jesus' blessings, Moses' laws, Socrates' sayings.
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