 Pari gbolohun yii: Ṣaaju 12 January 1377, Friedrich XI ṣe igbeyawo pẹlu Adelheid d. 1413, ọmọbinrin Count Hugo ti Fürstenberg-Zindelstein. Arakunrin rẹ Johann ni Gómìnà Fürstenberg-Haslah kẹyìn. Johann kú láìbímọ ní ọdún : Ogun ti Sempach ti 1386, ati Friedrich XI jogun Bräunlingen lati ọdọ rẹ, eyiti o fa ariyanjiyan gigun pẹlu ila akọkọ ti idile Fürstenberg. 