_Floris IV HOLLAND __+ | (1210 - 1234) _William II HOLLAND _| | (1226 - 1255) | | |_Matilda of REGINAR _ | (1200 - 1267) _Floris V HOLLAND ______| | (1254 - 1296) m 1270 | | | _Otto I WELF ________+ | | | (1204 - 1252) m 1228 | |_Elisabeth of WELF __| | (1230 - 1266) | | |_Matilda of ASCANIA _+ | (1210 - 1261) m 1228 | |--John I HOLLAND | (1284 - 1299) | _____________________ | | | _____________________| | | | | | |_____________________ | | |_Beatrice of DAMPIERRE _| (1260 - 1291) m 1270 | | _____________________ | | |_____________________| | |_____________________