Elin Ulfsdotter Snakenborg, Marchioness of Northampton, also known as Helena, and Helena the Red for her red hair, (1548/1549 – 10 April 1635) was a Swedish-born noblewoman, Maid of Honour of Queen Elizabeth I of England, and Marchioness of Northampton by her marriage to William Parr, 1st Marquess of Northampton.
She was born in Sweden, as Elin Ulfsdotter of Fyllingarum in the province of Ostrogothia, in either 1548 or 1549, as a younger daughter of Ulf Henriksson, lord of Fyllingarum (d. c. 1565), of the Bååt family, Senator of Sweden, and his wife Agneta Knutsdotter, heiress of Norrnes. Her father was a supporter of Gustav I, king of Sweden. By all accounts, Helena was a beautiful woman, with large brown eyes, red hair, and a pink and white complexion. She was described as having a strong will and independent mind.
Helena had two brothers and three sisters who survived childhood and had children of their own. Helena was baptized and given the name of her paternal grandmother, Elin Ulfsdotter of the Norwegian house of Sudreim, and her paternal grandfather's grandmother, another Elin Snakenborg. The name Snakenborg was taken from Helena's paternal grandfather's paternal grandmother, the said Elin Henriksdotter Snakenborg, whose patrilineal ancestors were originally from Mecklenburg in Germany. Also Helena's mother seems to have been a descendant of Agnes of Borgarsyssel, natural daughter of Haakon V of Norway.
Contrary to claims presented in some genealogies, Marchioness Helena's ancestry has not been proven to include medieval Viking Earls of Orkney. And also contrary to claims in some genealogies, she seems not to have descended from the sister of St Bridget of Sweden.
Helena was one of six young Swedish noble ladies who were Maids of Honour in the retinue of Princess Cecilia of Sweden, Margravine of Baden, second-eldest daughter of King Gustav I. Cecilia and her retinue departed Sweden in Autumn 1564 on a voyage to England, at the invitation of Queen Elizabeth I. It was rumoured that Cecilia was journeying to England to press the suit of her half-brother King Eric XIV of Sweden to marry Queen Elizabeth. Because Denmark-Norway was hostile towards Sweden, they were forced to take a roundabout, land route. They travelled through Finland, Livonia, Poland and Germany, which was a lengthy journey, until they reached Calais. The party is also reported to have been hampered by bad weather, and the last leg by seasickness. The voyage lasted almost a year until they reached their destination - they arrived on 8 September 1565 at Dover. Cecilia of Baden was at the time in her ninth month of pregnancy. The welcoming party at Dover was led by Sir William Parr, 1st Marquess of Northampton (1513–1571), the only surviving son of Sir Thomas Parr of Kendal, and brother of the late Queen consort Catherine Parr.