More about Henry from the website Gwulo, Old Hong Kong:

Born about 1814, a son of Daniel Caldwell (b.1788 St Helena d.1828 Penang Straits Settlement) who married Mary Manay (b.1797 St Helena d.Singapore) on St Helena on 06 Aug 1814.

HC Caldwell’s brother Daniel Richard Francis Caldwell (b.19 Sep 1816 St Helena d.02 Oct 1875 Hong Kong) married in 1851 in Hong Kong to Mary Ayow Chan (1834-1895).

Henry Charles Caldwell married in Singapore on 23 Jan 1838 to Eliza Lecerf. They lived at Caldwell House (aka ‘Chijmes’). They had a daughter Eliza Juliet.

In Singapore, Henry Charles Caldwell was apparantly a sworn clerk (1836-39). a senior clerk (1839-55) & a registrar (1855-6).

Apparantly, he left Singapore in 1856 due to financial difficulties (ref.Singapore Street Names by Victor R Savage & Brenda Yeoh 2013).

In 1863, HC Caldwell is listed as a notary public in Queen’s Road, Hong Kong (ref. The China Dir. 1863) with Roger Carmichael Robert Owen (Barrister).

 
In 1867 William Henry Brereton http://gwulo.com/node/21937 joined the law firm in Hong Kong of Henry Charles Caldwell & became a partner by 1870 (‘Caldwell & Brereton’). After 1871, following Henry Charles Caldwell’s departure from Hong Kong, the firm became known as ‘Brereton & Wootton’.  In 1880 the firm was joined by Victor Hobart Deacon & became ‘Brereton, Wootton & Deacon’.  The firm exists today in Hong Kong as Deacons http://gwulo.com/node/21983 .

Henry Charles Caldwell died in 1883 at Heath House, Twickenham, Middlesex, England.  Probate was granted to his wife & daughter.