John de MERSTON 
John de was born about 1181 in Merston, Bedfordshire, England. John de's father was Nigel de MERSTON. His paternal grandfather was Albri of CAINHO. He was an only child. He died before 1227.
He had a biological son named Ralph FitzJohn de.
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Children
Ralph FitzJohn de MERSTON
Ralph FitzJohn de was born before 1211 in Merston, Bedfordshire, England. He died before May 28th, 1257.