It was at this time that he married Margrit Wyssling, before leaving for Sumatra for four years. Frey took on his wife's name as Frey-Wyssling due to how common the name of Frey is in Switzerland.
It was at this time that he wedded Margrit Wyssling, prior to departing for Sumatra for four years. Frey adopted his wife's surname as Frey-Wyssling because the name Frey is prevalent in Switzerland.