Who is mother janet erskine stuart?

She was a Roman Catholic nun and educator.

Janet Erskine Stuart, also known as Mother Janet Stuart, (11 November 1857, Cottesmore, Rutland, England – 21 October 1914, Roehampton, England) was a Roman Catholic nun and educator.
OTHER INFO: Her father, The Reverend the Honourable Andrew Godfrey Stuart, a son of Earl Castle Stewart, was the Rector of Cottesmore and she was the youngest of his thirteen children. Her mother, his second wife, was Mary Penelope Noel, a relative of the Earl of Gainsborough.She converted to Roman Catholicism at the age of 22 and in 1882, she entered the Society of the Sacred Heart at Roehampton. In August 1911, she was elected the fifth Superior General of the Society of the Sacred Heart and Mother Janet Stuart held the office for three years until her death, aged 56, from undisclosed causes..
HOPE THIS HELPED :)

according to this text from the preamble to the declaration, who gives men their unalienable rights?

their creator