Hi Harriet, If Arthur Mavrogordato was your grandfather then we are distant cousins. His father was Alexander Mavrogordato the son of Alice Fanny Sarell who married Stephen Mavrogordato the banker in Constantinople. Hi mother was Alyson Young the daughter of George and Francis Young. He was born on 22nd November 1886.SSuibsequently educated at Oakham School in Rutland.
If you want to contact me I can let you have more info on Mavrogordato and Sarell families. I can be emailed on firstname.lastname@example.org All the best