In 1851 he married Frances Harriet Henslow ( 1825–1874 ) , daughter of Darwin 's mentor , John Stevens Henslow .
Head entity: john stevens henslow Q703925 17 18 19
Tail entity: frances harriet henslow Q27067567 4 5 6
Relation (head \u2192 tail): P22
Inverse relation (tail \u2192 head): P40