Question:
Who was the head of Romania in Jan, 1938?

Context:
 Constantin Dăscălescu is the head of the government of Romania from May, 1982 to Dec, 1989. 
 Dimitrie Sturdza is the head of the government of Romania from Apr, 1897 to Apr, 1899. 
 Mihai Răzvan Ungureanu is the head of the government of Romania from Feb, 2012 to May, 2012. 
 Ion G. Duca is the head of the government of Romania from Nov, 1933 to Dec, 1933. 
 Manolache Costache Epureanu is the head of the government of Romania from May, 1876 to Aug, 1876. 
 Mugur Isărescu is the head of the government of Romania from Dec, 1999 to Dec, 2000. 
 Alexandru G. Golescu is the head of the government of Romania from Feb, 1870 to Apr, 1870. 
 Adrian Năstase is the head of the government of Romania from Dec, 2000 to Dec, 2004. 
 Nicolae Văcăroiu is the head of the government of Romania from Nov, 1992 to Dec, 1996. 
 Dimitrie Ghica is the head of the government of Romania from Nov, 1868 to Jan, 1870. 
 Emil Boc is the head of the government of Romania from Dec, 2008 to Feb, 2012. 
 Manea Mănescu is the head of the government of Romania from Feb, 1974 to Mar, 1979. 
 Barbu Catargiu is the head of the government of Romania from Feb, 1862 to Jun, 1862. 
 Victor Ciorbea is the head of the government of Romania from Dec, 1996 to Apr, 1998. 
 Miron Cristea is the head of the government of Romania from Feb, 1938 to Mar, 1939. 
 Ion Emanuel Florescu is the head of the government of Romania from Mar, 1891 to Dec, 1891. 
 Petru Groza is the head of the government of Romania from Mar, 1945 to Jun, 1952. 
 Nicolae Iorga is the head of the government of Romania from Apr, 1931 to Jun, 1932. 
 Constantin Sănătescu is the head of the government of Romania from Aug, 1944 to Dec, 1944. 
 Dacian Cioloș is the head of the government of Romania from Nov, 2015 to Jan, 2017. 
 Florin Cîțu is the head of the government of Romania from Dec, 2020 to Nov, 2021. 
 Ion C. Brătianu is the head of the government of Romania from Jun, 1881 to Mar, 1888. 
 Victor Ponta is the head of the government of Romania from May, 2012 to Nov, 2015. 
 Ion Gigurtu is the head of the government of Romania from Jul, 1940 to Sep, 1940. 
 Mihai Tudose is the head of the government of Romania from Jun, 2017 to Jan, 2018. 
 Ion Gheorghe Maurer is the head of the government of Romania from Mar, 1961 to Feb, 1974. 
 Petre S. Aurelian is the head of the government of Romania from Dec, 1896 to Apr, 1897. 
 Constantin Argetoianu is the head of the government of Romania from Sep, 1939 to Nov, 1939. 
 Ludovic Orban is the head of the government of Romania from Nov, 2019 to Dec, 2020. 
 Ștefan Golescu is the head of the government of Romania from Nov, 1867 to May, 1868. 
 Călin Popescu-Tăriceanu is the head of the government of Romania from Dec, 2004 to Dec, 2008. 
 Lascăr Catargi is the head of the government of Romania from Dec, 1891 to Oct, 1895. 
 Gheorghe Gheorghiu-Dej is the head of the government of Romania from Jun, 1952 to Oct, 1955. 
 Chivu Stoica is the head of the government of Romania from Oct, 1955 to Mar, 1961. 
 Nicolae Golescu is the head of the government of Romania from May, 1868 to Nov, 1868. 
 Take Ionescu is the head of the government of Romania from Dec, 1921 to Jan, 1922. 
 Nicolae Ciucă is the head of the government of Romania from Nov, 2021 to Dec, 2022. 
 Radu Vasile is the head of the government of Romania from Apr, 1998 to Dec, 1999. 
 Ion Ghica is the head of the government of Romania from Dec, 1870 to Mar, 1871. 
 Viorica Dăncilă is the head of the government of Romania from Jan, 2018 to Nov, 2019. 
 Dimitrie Brătianu is the head of the government of Romania from Apr, 1881 to Jun, 1881. 
 Gheorghe Tătărescu is the head of the government of Romania from Jan, 1934 to Dec, 1937. 
 Theodor Rosetti is the head of the government of Romania from Mar, 1888 to Mar, 1889. 
 Sorin Grindeanu is the head of the government of Romania from Jan, 2017 to Jun, 2017. 
 Nicolae Rădescu is the head of the government of Romania from Dec, 1944 to Feb, 1945. 
 Theodor Stolojan is the head of the government of Romania from Oct, 1991 to Nov, 1992. 
 Ilie Verdeț is the head of the government of Romania from Mar, 1979 to May, 1982. 
 Gheorghe Argeșanu is the head of the government of Romania from Sep, 1939 to Sep, 1939. 
 Petre Roman is the head of the government of Romania from Dec, 1989 to Oct, 1991. 
 Armand Călinescu is the head of the government of Romania from Mar, 1939 to Sep, 1939. 
 Octavian Goga is the head of the government of Romania from Dec, 1937 to Feb, 1938. 
 Mihail Kogălniceanu is the head of the government of Romania from Oct, 1863 to Jan, 1865. 
 Nicolae Crețulescu is the head of the government of Romania from Jun, 1865 to Feb, 1866. 
 Constantin Bosianu is the head of the government of Romania from Jan, 1865 to Jun, 1865.

Answer:
Octavian Goga