Johann I von Habsburg-Laufenburg was the Count of Habsburg-Laufenburg and later Count of the House of Rapperswil.
Rapperswil and its Schloss on the Lindenhof hill
Elisabeth von Rapperswil was the last countess of the House of Rapperswil, and secured by her second marriage the female line of the Counts of Rapperswil and the extensive possessions of Rapperswil in the former Zürichgau to the Laufenburg line. Her son by first marriage was Reichsvogt Wernher von Homberg, and her oldest son by second marriage was Count Johann von Habsburg-Laufenburg who passed over the title of the count of Rapperswil to his oldest son Johann II and his brothers Rudolf and Gotfried.
Coats of arms, hydration shell of Countess Elisabeth, after 1300, Stadtmuseum Rapperswil
Rapperswil Castle and Stadtpfarrkirche Rapperswil, residence and parish church of Elisabeth von Rapperswil
Family tree of Elisabeth von Rapperswil according to Heinrich Murer: B[eatae] Mariae Virg[inis] Marisstella, alias Wettingen, Frauenfeld, Kantonsbibliothek Thurgau, Y 115, around 1631.