What does Ruth 4:10 mean?

'I've also taken Ruth the Moabite, Mahlon's widow, as my wife, so the name of the dead will stay connected to his property. That way, his name won't disappear from his family or from this town. You are all witnesses today.' Ruth 4:10 - Modern Text Bible

(Boaz makes it clear he's marrying Ruth to honor Mahlon's memory and keep his family line alive, which was a big deal in their culture.)