Johann I of Mecklenburg Prince
Johann I of was born about 1202 in Schwerin,Mecklenburg.  He died on August 1st, 1264.  He was buried in Doberan,Mecklenburg-Schwerin,Germany.

 Luitgard, Countess Of Henneberg
Luitgard, Countess Of was born about 1211 in Of Henneberg,Ostpreussen,Prussia.  She died before June 14th, 1267.

 Heinrich I of Mecklenburg Prince
Heinrich I of was born about 1230 in Schwerin,Mecklenburg.  He died on January 2nd, 1302.

 Elisabeth of Mecklenburg Princess
Elisabeth of was born about 1231 in Schwerin,Mecklenburg.

 Heinrich II (Der Lowe) Prince of Mecklenburg
Heinrich II (Der Lowe) Prince of was born in 1267 in Riga,Vidzeme,Latvia,Latvia.  He died at the age of 72 on January 21st, 1339 in Neubrandenburg,Mecklenburg-Schwerin,Prussia,Germany.