Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of Swedish monarchs
Table title:
House of Palatinate-Zweibrücken, a branch of the House of Wittelsbach
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Portrait </th><th colspan=1 rowspan=1 > Birth </th><th colspan=1 rowspan=1 > Marriages </th><th colspan=1 rowspan=1 > Death </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Charles X Gustav (Karl X Gustav) 6 June 1654 – 13 February 1660 </td><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Nyköping Castle, 8 November 1622, son of John Casimir, Count Palatine of Zweibrücken-Kleeburg and Catharina of Sweden (daughter of Charles IX) </td><td class="highlighted"  colspan=1 rowspan=1 > Hedwig Eleonora of Holstein-Gottorp </td><td class="highlighted"  colspan=1 rowspan=1 > Gothenburg, 13 February 1660, aged 37, buried in Riddarholmen Church </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Charles XI (Karl XI) 13 February 1660 – 5 April 1697 </td><td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > Tre Kronor (castle), 24 November 1655 son of Charles X and Hedwig Eleonora of Holstein-Gottorp </td><td colspan=1 rowspan=1 > Ulrika Eleonora of Denmark </td><td colspan=1 rowspan=1 > Tre Kronor (castle), 5 April 1697, aged 41, buried in Riddarholmen Church </td></tr>
<tr> <td colspan=1 rowspan=1 > Charles XII (Karl XII) 5 April 1697 – 30 November 1718 </td><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Tre Kronor (castle), 17 June 1682 son of Charles XI and Ulrika Eleonora of Denmark </td><td colspan=1 rowspan=1 > None </td><td colspan=1 rowspan=1 > Fredrikshald, Norway, 30 November 1718, aged 36, buried in Riddarholmen Church </td></tr>
<tr> <td colspan=1 rowspan=1 > Ulrica Eleanor (Ulrika Eleonora) 5 December 1718 – 29 February 1720 </td><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Tre Kronor (castle), 23 January 1688 daughter of Charles XI and Ulrika Eleonora of Denmark </td><td colspan=1 rowspan=1 > Landgrave Frederick V House of Hesse (see below) </td><td colspan=1 rowspan=1 > Stockholm, 24 November 1741, aged 53, buried in Riddarholmen Church </td></tr>
</table>
Question:
Who is Hedwig Eleonora of Holstein-Gottorp?
Answer:
Hedwig Eleonora of Holstein-Gottorp was the Queen of Sweden from 1654 until 1660 by marriage to Charles X Gustav of Sweden and the mother of Charles XI.