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Male Count Johann I of Heinsberg-Lowenberg Click to view Count Johann I of Heinsberg-Lowenberg in the family tree

Count Johann I of was born in 1248.  Count Johann I of's father was Count Heinrich I of Sponheim and his mother was Princess Agnes of Heinsberg-Valkenburg.  His paternal grandparents were Count Gottfried VI of Sponheim and Princess Adelheid of Sayn; his maternal grandparents were Dietrich I Count Heinsberg-Valkenburg and Isalde Princess Of Limburg. He had two brothers and two sisters, named Count Heinrich of, Count Dietrich I of, Princess Aleidis of and Princess Agnes of.  He was the second youngest of the five children.

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