The alley was named after seven blacksmiths which used to operate in Schmidtengasse.
Official content of
Radolfzell am Bodensee
The seven in Radolfzell existing guilds were of social, clerical and sociable character and had unlike to other cities not grown into powerful political organizations.
The need for building space within the city walls lead to erecting narrow houses in between the gaps between buildings which were supposed to prevent danger of fire. House number 5 is with 2,5 m width the most narrow one in the old town centre.