Poco

This plugin installs a widget for showing a Google Calendar agenda on the sidebar. 
Once installed it adds a sidebar widget called ‘Google Calendar’ that may be dragged into your sidebar. 
Each widget can be configured with a ID of the calendar feed, a title, and the number of agenda items to show.
The calendar feed ID is the ID next to ‘Calendar ID:’ in the Google Calendar settings.
Multiple widgets can be used on the same page and each one can reference a different feed.
See also <a href="http://notions.okuda.ca/wordpress-plugins/google-calendar-widget/" rel="nofollow ugc">http://notions.okuda.ca/wordpress-plugins/google-calendar-widget/</a>

Google Calendar Widget

This plugin installs a sidebar widget that can show the upcoming events from a Google Calendar feed.

Nick Young

Phil Derksen

Fulvio Notarstefano

Ross Hanney

Disconnected from “Simple Calendar” (formerly Google Calendar Events) on WordPress.org to provide only critical security patches.
All new features added to Simple Calendar going forward.
<a href="https://github.com/moonstonemedia/WP-Google-Calendar-Events" rel="nofollow ugc">Google Calendar Events 2.4 Legacy on GitHub</a>
<a href="https://wordpress.org/plugins/google-calendar-events/" rel="ugc">Simple Calendar 3.0+ on WordPress.org</a>
<a href="https://github.com/moonstonemedia/Simple-Calendar" rel="nofollow ugc">Simple Calendar 3.0+ on GitHub</a>
Originally authored by <a href="http://rhanney.co.uk/" rel="nofollow ugc">Ross Hanney</a>.

Legacy Google Calendar Events 2.4

It works for me

Thank you!

Fork of the Google Calendar Events 2.4 WordPress plugin. Intended for backwards compatibility only.

Google Calendar Widget vs Legacy Google Calendar Events 2.4