Custom JQGrid Sort

I have a JQGrid filled with data that works correctly. The default sort function works as expected. However, I would like to sort by column click and by column of names; everytime. I think that onSortColis where I should start, but there is not much documentation on how to sort the contents of the table. Ideally, I would not have to write my own sorting algorithm and somehow just connect to the JQGrid API. All data is on the client, and I would like to avoid a trip to the server, if at all possible.

Here is the code I use to create the grid:

$jqGrid = $('#people_SelectedContacts').jqGrid({
    ajaxGridOptions: {
        type: "POST"
    },
    url: 'AJAX/GetContacts',
    datatype: "json",
    postData: JSON.stringify({ ID: $('#ID').val() }),
    loadonce: true,
    sortable: true,
    caption: "Selected Contacts",
    hidegrid: false,
    autowidth: true,
    rowNum: 10000,
    height: "100%",
    loadui: 'block',
    colNames: ['lecID', 'lrlID', 'mjID', 'Role', 'Name', 'Entity', 'Contact', 'D #', ''],
    colModel: [
        { name: 'LECID', hidden: true },
        { name: 'LRLID', hidden: true },
        { name: 'MJID', hidden: true },
        { name: 'RoleLookupName', index: 'RoleLookupName' },
        { name: 'FullName', index: 'FullName' },
        { name: 'Entity', index: 'Entity' },
        { name: 'ContactInformation', index: 'ContactInformation' },
        { name: 'DNumber', index: 'DNumber' },
        { name: 'Remove', sortable: false, width: 25 }
    ],
    jsonReader: {
        root: 'ReturnValues.Contacts',
        repeatitems: false
    },
    beforeProcessing: function (data, status, xhr) {
        if (!data.ReturnValues.Contacts) {
            data.ReturnValues.Contacts = new Array();
        }
        $.each(data.ReturnValues.Contacts, function (index, value) {
            value.Entity = FormatAddress(value);
            value.ContactInformation = FormatContact(value);
            value.DNumber = FormatDocket(value);
        });
    },
    gridComplete: function () {
        var ids = $jqGrid.jqGrid('getDataIDs');
        for (var i = 0; i < ids.length; i++) {
            removeButton = $('<span>').addClass('remove-contact jqui-button-fix');
            $jqGrid.jqGrid('setRowData', ids[i], { Remove: $('<div>').append(removeButton).html() });
        }
    },
    loadComplete: function (data) {

    },
    onSortCol: function (index, iCol, sortorder) {

    }
});