In 1841 Richard Pate Manning is in the Walton Lodge Licensed Madhouse.

The proprietor is a Richard Squires, his wife Mary and 5 children aged between 5 and 1.
There are about 25 men who have mostly well to do occupations and 8 ladies.
By 1851 the Squires have left. it seems that the couple are living in separate households, Richard is with his mother and now working as a coal merchant in West Derby. Richard died in 1854.
1851 Piece 2191
Folio 8
Page number 9
By 1851 John P Litchfield b 1806 Chelsea is there, about 30 inmates with only initials, 9 servants. Again they have good occupations, or did have. John P Litchfield is married but his wife isn`t there,
a newspaper article from 1853 about Lunacy states he has retired.
This may be him . New York Newspapers.
John Palmer Litchfield
Topic Accident or Emergency Incident
Residence Place New York, New York, USA
Publication Date 7 Aug 1852
Publication Place New York, New York, USA
UK and Ireland, Medical Registers, 1859-1943
John Palmer Litchfield
Registration Date 10 Jun 1859
Residence or Employment Date 1860
Residence or Employment Place Rickwood, Near Kingston, Canada West
It`s possible he had already been in Australia .
John Palmer Litchfield Record Type Cases Residence Date 26 Jul 1841 Residence North Adelaide
Register of Insolvencies 1841-1928 he is a proprieter of a lunatic asylum, Moorfield House.
South Australia, Australia, Destitute Asylum Ledgers and Admissions to Industrial and Reformatory Schools, 1849-1913
Liverpool, England, Electoral Registers, 1832-1970
Name John Palmer Litchfield
Residence Year 1851-1852
Street Address Walton Lodge
and in 1861 is a surgeon in Canada West Frontenac . he died in 1868
Findagrave
https://www.rootschat.com/links/01tpt/