Tarlochan Singh Sandhu's father, Joginder Singh Sandhu was a well known personality in East African hockey circles in the 1950s. He was the President of Khalsa Sports Club in 1954, the year the Club won the M.R. D' Souza Gold Cup, the premier Club tournament in East Africa.
His elder brothers, Jaswant and Pritam, were also international players, Jaswant played for Tanganyika (Tanzania) and Pritam for Kenya.
He was the Secretary of Tanzania Hockey Association from 1971 to 1988.
He was the Treasurer of African Hockey Federation from 1973 to 1988.
He was Treasurer of Tanzania Olympic Committee from 1971 to 1988.
He was a member for Africa on the Finance Committee of Commonwealth Games Federation from 1978 to 1986.
He was part of the Tanzanian Contingent to the Moscow, LA and Seoul Olympics.
At the Los Angeles 1984 Olympic Games Opening ceremony, the Sandhu family represented two countries, Tarlochan representing Tanzania and his elder brother, Pritam, who played hockey for Kenya at the 1960 Rome Olympic Games, representing Kenya.
Tarlochan emigrated to Canada in 1988 and now resides in British Columbia.