Wilhelm Wahlforss married Siri Wrede in April 1917, and soon the couple started to expect a child. But soon times became turbulent – Carolus and Dutta Wrede were maltreated and captured for six days by workers and Russian seamen in November. Labour movement was increasingly radicalising and the Fiskars factory was only protected by some dozen men with carbines who could have done little against the 500 workers, who, however, stayed calm during the soon following civil war. In February the time of birth was getting closer, and for this Siri Wahlforss travelled to Turku which was in hands of Red Guards. Wilhelm Wahlforss was a leader in Pohja Civil Guard and he participated in actions of the White Guard. His personal involvement is unclear but it is strongly suspected that the troops he led participated in executions of dozens of Red Guard soldiers in Nummi. Their daughter Christel was born on 12. March 1918.