Here’s the key connection: Her father, Peter, was the only son of , the only child of King Vajiravudh (Rama VI). Through that line, Ploypailin carries the bloodline of the Chakri dynasty, but she does not hold a royal title or style. In Thai royal custom, titles are not automatically inherited through the adopted line or female lineage in the same way.
Than Phu Ying Ploypailin Mahidol Jensen (born February 12, 1981) is a prominent member of the Thai royal family, an accomplished musician, and a former financial consultant. Although she is not in the line of succession because her mother relinquished her royal title upon marriage, she remains a celebrated figure in Thailand. Royal Pedigree ploypailin jensen