Gustav Hermann Krumbiegel was born in Germany in 1865 and trained at the Royal Botanic Gardens Kew during the early 1890s.
He then moved to Bangalore, where he worked at Lal Bagh Botanical Gardens and helped design the city's tree-lined avenues which contributed to its reputation as India's 'Garden City'.
After his death in 1956, his wife Kate and three daughters - Hilda, Frida and Vera - moved to Fulham where it is believed they had a house.
Staff at Pillnitz Palace and Park, in Dresden, are putting together an exhibition marking the 150th anniversary of Krumbiegel's birth.
Richard Ward, advisory editor of the Kew Guild, the association of current and former Kew Gardens staff, is helping with the preparations and wants to hear from any descendants.
He said one woman called Dawn Wil(l)mott had been mentioned.
Anyone who can help is asked to call Richard on 020 8878 6696 or email firstname.lastname@example.org.