namesake -
One who is named after another or for whom another is named.
namesake -
A person with the same name as another.
namesake -
A ship or a building that is named after someone or something.
Wikipedia
Namesake (sometimes "name's sake") is a term used to characterize a person, place, thing, quality, action, state, or idea that is called after, or named out of regard to, another. For example, if a target person, place, or thing is named after a source person, place, or thing, then the name target is said to be the namesake of the name source. First recorded in 1646 to mean "person named for the sake of someone", the reference to something being a namesake of something else imports a connection between the two that extends beyond sharing similarly looking names to one of a shared name, usually called the same name.
OmegaWiki Dictionary
Ω
namesake Someone who has the same first name and/or last name as another person, without being related.
