No, she wasnt.
Mary Queen of Scots was famous for promising the throne to England,Ireland,Wales and France at the same time
The cast of Prince and Princess of Wales - 1902 includes: King George V as himself Queen Mary as herself
Yes, but the Queen Mother died some years ago, so is not the current Queen Mum. Elizabeth II has been for 60 years a Regnant ( ruling) Queen, as distinguished from a Queen Mother or a Queen Consort. Queen Mary of ocean Liner fame was a Queen Consort, so it is incorrect, though people do it, to style her as (Queen Mary III). Mary died on 3.25.53 .
Mary T. Wales died in 1952.
The cast of Arrival of the Prince and Princess of Wales - 1906 includes: King George V as himself Queen Mary as herself
The cast of Return of the Prince and Princess of Wales - 1901 includes: King George V as himself Queen Mary as herself
The cast of Prince and Princess of Wales at Gwalior - 1906 includes: King George V as himself Queen Mary as herself
Mary Anne Wales House was created in 1886.
The cast of Visit of Prince and Princess of Wales to Bristol - 1902 includes: King George V as himself Queen Mary as herself
The cast of Prince and Princess of Wales Leaving Abbey - 1902 includes: King George V as himself Queen Mary as herself
The cast of Indian Tour of Prince and Princess of Wales - 1903 includes: King George V as himself Queen Mary as herself
The cast of Return of T.R.H. the Prince and Princess of Wales - 1906 includes: King George V as himself Queen Mary as herself