Peder Christian Pedersen married Martha Spain (Canadian) in1898 in Shanghai. In 1899 their daughter Edith was born. Martha died of malaria in 1900. PCP returned to Denmark with his daughter in 1901. 1903 he married Hansine Christiane Westergaard. They had four children:
Kaj (1903), Ejnar (1905), Hans (1907) born in Denmark, and Gudrun (1912) born in Shanghai.
In 1908 PCP returned to China and in 1909 his wife followed with Ejnar and Hans. Edith and Kaj were left with their grandparents. PCP and his wife returned to Denmark in 1926 and settled in Dronningborg. They later moved to Sorø and Langaa.