He was relieved to see an heir make a suitable marriage , and was in good spirits , even leading the toast at the wedding breakfast .
Charles 's great - uncle , the 81 - year - old Emperor Franz Joseph , attended the wedding .
Charles was relieved to see an heir make a suitable marriage , and was in good spirits , even leading the toast at the wedding breakfast .
Charles 's great - uncle , the 81 - year - old Emperor Franz Joseph , attended the wedding .