I have Lavinia Cleere as dtr. of George Cleere and his 1st wife, Elizabeth (possible Elliott--maiden name).Other than their marriage date of Mar 19, 1807, I don't have any info for Lavinia & John T. Whitlock's children or his parents.
George's 3rd wife was Susanna(h) SIZER, dtr. of John Sizer. George & Susanna(h) had ONE child, LEA(H) ANN GEORGE CLEERE who married Thomas Dillard Smith.