During the 1880s, Cowan encountered business difficulties and was on the verge of becoming insolvent. Cowan considered re-standing for the Electoral district of Yalata when a vacancy was created in July 1890 by the death of
James Cowan, his younger brother who was one of the two current sitting members. Cowan was nominated but later stood down for medical reasons. The vacancy was subsequently filled by
Richard Butler who had unsuccessfully stood for the seat earlier in 1890. Cowan died on 14 September 1890 at
Milang, pre-deceased by his wife who died in June 1890 and survived by his five sons including
John who would also serve as a South Australian parliamentarian, and one daughter. ==See also==