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In page Archduchess Maria Theresa of Austria (1762–1770):

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When she was a little over a year old, her mother died a week after giving birth to her only sibling, Archduchess Marie Christine, who died a few moments after being born. Her father was inconsolable and found refuge in his infant daughter,[1] whom he referred to as his "second self".[citation needed] Maria Theresa was also close to her youngest paternal aunt, Archduchess Maria Antonia, just seven years her senior. She was also Empress Maria Theresa's first grandchild.