I don't know anything about Henry Meason Peckover, but Robert Christopher Peckover (whom I have also seen described as Christopher Robert Peckover) was my grandfather Edgar Peckover's brother.
Chris was born Apr 05 1890 in Middlesbrough, England, and died Jan 20 1967 in New Liskeard, ON, Canada.
His parents were John Frederick Peckover (born May 8 1863 in Spalding, Lincoln, England; died Sept 23 1945 in New Liskeard, ON, Canada) and Harriet Taylor Watts (born 1861, North Walsham, Norfolk, England; died Jun 07 1903, New Liskeard, ON, Canada).John F. and Harriet emigrated from England to Canada in 1899.John F.'s mother was Mary Ann Peckover, born Feb 22 1840 in Shouldham, Norfolk, England; her parents were Gregory Peckover, DOB Sept 15 1811 in Shouldham, Norfolk, DOD Jun 1892 Downham District, Norfolk, England, and Elizabeth Shirl(e)y, born 1815 in Shouldham, Norfolk, died 1887 in Downham District, Norfolk.
Gregory's parents were Francis Peckover (born around 1780 - possibly as early as 1768 - in Shouldham) and Mary Russell (no info re date of birth or death, but marriage took place Dec 06 1805).
I hope that is the right Christopher Robert, and that this information is helpful.