William I Of+ Scotland & Isabel+ Avenell 
They had two daughters named Ada Of+ and Isabella Of+.
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Personal Details
William I Of+ Scotland
William I Of+ was born in 1143 in Scotland. He died at the age of 71 in 1214.
Isabel+ Avenell
Isabel+ was born about 1144 in Edinburgh, Mid-Lothian, Scotland. She died about 1185 in Stirling Castle, Stirlingshire, England.
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Children
Isabella Of+ Scotland
Isabella Of+ was born about 1162 in Haddington, East Lothian, Scotland. She died after October 1263.