Gmap Point List is a plugin that lets you create your own map from Google Maps, with one or more markers, with custom address. Requires jQuery loaded in the top of the Web. Map multiple instances on the same page is not allowed.
You can find the plugin documentation (spanish only) [Docs] (http://www.rafelsanso.com/plugin-para-wordpress-gmap-point-list/). If you have any questions you can contact me [FAQ] (http://www.rafelsanso.com/#contact-2)