John Adam Hilger (1839-1897), scientific instrument maker
1839 Johann Adam Hilger was born in Darmstadt, Germany[1]
1871 Johan A. Hilger 32, living in Whitechapel, a Philosophical Instrument maker, with his daughter, Pauline J M Hilger 5, his wife, Margaret F. Hilger 27, and his brother, Otto Hilger 21[2]
1874 Established business as Adam Hilger Ltd[3].
1881 Philosophical instrument maker, employing 8 men, living in Tottenham Court Road, London with his wife Celine Hilger 36 and daughter, Martha Hilger 10 months[4]
1891 Optician, living in St Pancras with Celine Hilger 42, Martha Hilger 10[5]
1897 Died in Brighton[6]