Joachim Grieg donated the former residence to the municipality of Fana. He was elected to the Parliament of Norway from 1906 to 1909, representing the Liberal Left Party. In 1879, he married Henriette Juliane Lehmkuhl (1858-1937), daughter of merchant Joachim Ehrenreich Lehmkuhl (1822-1905) and Juliane Sophie Hammer (1819-1893). He was the brother of John Grieg (1856-1905); uncle of Sigurd Jebsen Grieg (1894-1973); cousin of Edvard Grieg (1843-1907); brother-in-law of Kristofer Lehmkuhl (1855-1949). Joachim Grieg was appointed Knight of the 1st Class Order of St. Olav in 1905, won the Commander Cross of 2nd class in 1910 and had several foreign orders. Joachim
Mothsgården in 1970. A memorial plaque on the side of the building facing the village pond commemorates the Norwegian composer Edvard Grieg's composition of his Piano Concerto in A minor during a visit to Mothsgården in the summer of 1968 ("Her i Mothsgaarden / komponerede / Edvard Grieg / i sommeren 1868 / koncerten for klaver / og orkester / Søllerød Kommune satte dette minde 1968"). Grieg often visited Denmark, where he had lived from 1863 to 1866 and where his mother had family (Hagerup). In 1867, he married his Danish cousin Nina Hagerup in Copenhagen. In 1868, the couple returned