Groves's daughter Imogen Emily (died 1886) married William Edward Hall in 1866. His daughter Anna married Herbert Augustus Hills (1837–1907) and was mother to Edmond Herbert Grove-Hills ("Colonel Rivers"), and John Waller Hills.
The lunar crater “GROVE” is named for him.
[Information provided by Paul Nicholls-Jones (mail: email@example.com) who is backing the campaign
for Swansea City to celebrate one of her world famous sons on his bicentenary next July 2011.]