Ριζοχώρι – Μεσσηνία | Terrabook
The village name was Lapi, which was believed to refer to the Lab tribe of Albanians (normally rendered in Greek as Liapis, and I wouldn’t be surprised if this is a folk etymology).
As inevitably happened with most foreign-looking village names, the village was renamed to Rizochori in 1940. The link reports that its current population is 60.