I was thinking of using the name Verity for a woman character in the Victorian period. I searched for it in the 1881 Census to see how commonly used it was.
The search returned twenty eight people who had Verity as a given name. Twenty two of them were men.
Verity is a surname; there was a Yorkshire cricketer called Hedley Verity. Most, if not all, of the male Veritys were probably named after a Mr Verity of their parents' acquaintance.
Three of the six women had Verity as their second given name, not their first. They too might have been named after someone with the surname Verity.
Which leaves three girls or women alive in 1881 whose parents might have chosen the name Verity intending it to mean 'Truth'. If I use it for my character I'll be giving her a name that was very unusual at the time, and most people, on hearing it, would probably think she was a man. Which is a bit too much of a cliche to use as a plot point.
One difficulty with choosing a name for a Victorian-era character is that the Victorians loved short forms or pet forms of names. The Queen's three eldest children were known as Vicky, Bertie and Affie. I don't want my character to be Kate or Lizzie or Nellie, but realistically, if her name was Katherine or Elizabeth or Ellen (or Helen or Elinor), that's what her friends would call her. So I want a name that could plausibly have been given to a girl born on the mid 1850s that can't easily be shortened or otherwise altered.