Different sidebar by page id

Hello,

Currently I have a number of different sidebars on my WordPress website for each different parent page, for example this is how I currently determine which sidebar is shown on what page

if (is_page(array(130,1425,1367,1421,1601,1821,1184,843,2233,829,2235,823,858,845,865,2231,2223,2229,872,869,867,863,2350))) {
/*Events Sidebar*/

	include(TEMPLATEPATH . '/sidebar-events.php');

}

elseif (is_page(array(28,91,92,95,96,97,49,98,106,107,108,109,258,277,291,319,99,103,193,169,94,301,2603))) { /* LtoE Sidebar*/

	include(TEMPLATEPATH . '/sidebar-learn-earn.php');

}

Each time I add a new page I have to manually input the page id for the content in sidebar.php

Is there a way of getting wp_list_pages – child_of=’ for example to get the page ids automatically?

Many thanks