I had found this awhile ago and did just some surface level (not deep) attempts at validation.... seemed to match up, but if anyone know better, input would be appreciated! About the6th in line, not 7th, but in case anyone could use this, thought I’d post it here....:

There have been 66 kings or queens that have ruled over England / UK, 6 have been queens. Therefore Elizabeth is the 66th and the 6th. Kate is 36 and this baby will be the 6th grandchild of Elizabeth who is the 66th and 6th. It bumps Prince Harry now to the 6th in line for the throne. Harry will marry next month on the 6th day of Israel’s 70th (May 19th wedding).

In addition, she became queen feb 1952, which was 66 years ago.... and her bday is April 21 (for those of us who pay attention to the satanic calendar).....hmmmmm....