What is 'stepfather and unknown' when translated from English to Italian?

Patrigno e sconosciuta and patrigno e sconosciuto are Italian equivalents of the English phrase "stepfather and unknown." Context makes clear whether the stepfather in question is with a feminine unknown, in the first case, or with an unknown male, in the second example. The respective pronunciations will be "pa-TREE-nyo ey SKO-no-SHOO-ta" and "pa-TREE-nyo ey SKO-no-SHOO-to" in Italian.