Hi Barry,
A long time ago since you posted this but I am wondering if you have made any headway with the Philip John Hocquard marriage to Sarah Ann Oosterveld (?Distant)?
I am in Penang where there is a gravestone for Alexander Distant (1835-1883), and on the back a memorial to 'Ary Osterveld' (b.c. 1839-1882). Do you have a date for the above marriage? Perhaps Ary married a Sarah Ann Distant then she married Hocquard? Info on this family seems scarce. Any help you or anyone else can give would be greatly appreciated.