Otto I von Brandenburg, Markgraf von Brandenburg, was born circa 1127 to Albrecht von Brandenburg (c1100-1170) and Sophie von Winzenburg (c1105-1160) and died 8 July 1184 Stendal of unspecified causes. He married Judith of Poland (c1132-c1173) 6 January 1148 JL in Kruszwica. He married Ada van Holland (c1163-1205) 1176 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s.
|Offspring of Otto I von Brandenburg and Judith of Poland (c1132-c1173)|
|Otto II. von Brandenburg (aft1147-1205)|
|Heinrich von Gardelegen (?-?)|
|Offspring of Otto I von Brandenburg and Ada van Holland (c1163-1205)|
|Albrecht II. von Brandenburg (c1150-1220)||1150||25 February 1220||Mechthild von Lausitz (c1185-1255)|