What were the names etc of his wife & children? Can you tell us what documentation you have that confirms they were also in India at the time of the 1921 census
Not what you asked for but found this on Family Search Site. Based on his age in the 1921 (38 years & 10 months) his DoB would be roughly 1882. Point of interest "Marital Status Unknown"Also listed as William Percy Freman not Percy William Freeman. Might help your future search using this variant.Name William Percy FremanSex MaleAge 41Birth Year (Estimated) 1882Death Date 7 Jan 1923Marital Status UnknownEvent Type BurialEvent Date 7 Jan 1923Event Place Bengal, IndiaEvent Place (Original) Meerut, Bengal, IndiaHope this helps
I recently unearthed a 1921 Indian Census entry - no mention of family even though child was born in the locale at the time. I think you will find the '21 Census didn't extend to "civvies".