Question:
Who was the head of Romania in Mar, 1870?

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

Answer:
Alexandru G. Golescu