Ivor Mervyn Pritchard was born in Beaumaris, Isle of Anglesey, Wales on 25 December 1886 and was articled to Joseph Owen (c.1867-1921) in Menai Bridge, Wales in 1903. He also attended the University College of North Wales [now Bangor University] and at the Architectural Association Schools and Royal Academy Schools in London. After leaving Owen's office he worked as an assistant to Walter Frederick Cave (1863-1939); to Louis Ambler (1862-1948); and to Henry Victor Ashley (1872-1948) and Francis Winton Newman (1878-1953) of Ashley & Newman.
Prititchard qualified as an architect in 1911 and later that year was elected an Associate of the Royal Institute of British Architects (ARIBA). He subsequently practised in London and was appointed Architect to the Royal Commission on Ancient Monuments (Wales).
In addition to his work as an architect, Pritchard was also an etcher and attended classes at Central School of Arts & Crafts in London. Between 1925 and 1933 he exhibited at the Royal Birmingham Society of Artists; Dudley Gallery and Royal Academy in London; Walker Art Gallery in Liverpool; the Paris Salon; and at the Royal Cambrian Academy in Conwy Wales, of which he was an elected a member.
His address was given as Gwynfr Beaumaris, Caernarvonshire, Wales in 1911; Menai Lodge, Chiswick, London in 1914; and 12, Calais Gate, London in 1923 and 1948. He died in Croydon, Surrey on 10 February 1948