Serlo de Grendon II 
Serlo was born about 1158 in Grindon, Leek, Staffordshire, England.1 Serlo's father was Serlo de Grendon and his mother was Mary FitzRalph. His maternal grandparents were Lord of Ockbrook Ralph FitzGeremund and Hawise. He had a brother named William. He was the older of the two children.General Notes
Note: I notice that Susan Johanson has Isolda born to the elder Serlo de Grendon. However I have a son William with descendants who would have inherited fromthe elder Serlo, and since Isolda was a co-heiress, she must be a daughter of the younger Serlo. Also since she was living in 1259, a later birth date seem likely.
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=:3152034&id=I004112
Details of Serlo's family
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