Gerard I Von+ Holstein & Elizabeth Von+ Mecklenburg 
Gerard I Von+ and Elizabeth Von+ were married in a religious ceremony about 1250. They had three sons and two daughters, named Gerard II Von+, Adolph, Heinrich I Von+, Liutgarde Von+ and Hedwig Von+.
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Children
Liutgarde Von+ Holstein-Itzehoe
Liutgarde Von+ was born about 1251. She died on February 28th, 1290.
Gerard II Von+ Holstein-Plon
Gerard II Von+ was born on November 1st, 1253. He died at the age of 58 on October 25th, 1312.
Heinrich I Von+ Holstein
Heinrich I Von+ was born about 1258 in Itzehoe, Schleswig-Holstein, Prussia. He died on August 5th, 1304. He was buried in Itzehoe, Schleswig-Holstein, Prussia.