Lucy Helen Muriel Soulsby (18 July 1856 – 19 May 1927) was a British headmistress of Oxford High School for Girls.

Her parents were Susan Sybilla (born Thompson) and Christopher Percy Soulsby and she spent her early childhood in New Zealand.

[1] When they were living together in Salcombe in Devon their whole day was devoted to household chores, serving tea for visitors and good works in the parish.

[1] She became the headmistress of Oxford High School for Girls in 1887[1] taking over from Matilda Ellen Bishop[3] In her first year she employed Charles Dodgson as a mathematics tutor.

He proved a demanding teacher, but he later donated several first editions of his (Lewis Carroll's) Alice's Adventures in Wonderland.