My family seem to mainly have stuck to the names they were born with, apart from the usual Nell(ie)s for Ellen & Helen(a), Great Uncle Jack who was really John and my Dad. He was named Edward Roy, but always known as Roy because, although Grandma named him after her 'baby' brother who was killed in WW1 two and a half years before Dad was born, she couldn't bear to call her baby by her brother's name. Oh yes, almost forgot about Dad's younger brother William who was always known as Flip!
OH had a Great Aunt Cissie who's daughter was also Cissie. They were known as Big Cissie & Little Cissie! Big Cissie was really Elizabeth, but I've no idea what Little Cissie's real name was!
Just before Christmas I went to visit my 99 year old Great Aunt (Uncle John/Jack's widow) and her son had a photo album with photos of my Great Great Grandparents, his Great Grandparents, in. I'd never even seen photos of my Great Grandfather, who died in 1937, let alone his parents. My cousin once removed promised me copies, but they haven't materialised yet. He isn't very computer literate but luckily his children have an interest in the family history and hopefully they will scan & email me some copies. I'll have to write a 'threatening' letter otherwise
or go to his house & 'steal' the album
I remember one of the photos shows my Great Grandparents, with some of their children including my Grandad, in 1911 outside the house they were living in when the census was taken. The house is long since demolished, but it really made it real to see what it, and they, looked like almost 100 years ago.