Here's a word we should all start using

[Zaphod99]

I saw it on a headstone recently, PROAVO. 

proavo m (plural proavi, feminine proava)

I searched on Rootschat, and nobody has ever used it.

https://en.wiktionary.org/wiki/proavo

Zaphod

[MollyC]

That rang a bell with me so I reached for my Collins Latin Gem Dictionary, 1957 (repr. 1961) - a pocket sized book which accompanied me to O level GCE.  On pages xx-xxi is a Roman family tree, from Tritavus/Tritavia (4xgt grandparents) down to Pronepos/Proneptis (great grandchildren).  Ego is somewhere in the centre.  It includes different words on the paternal/maternal sides and all the in-laws and step relations you could wish for!

[Zaphod99]

Here is a clickable alternative.

https://latin.stackexchange.com/questions/2628/a-complete-family-tree

Also here:

https://latin.stackexchange.com/questions/294/how-would-a-roman-refer-to-a-great-great-great-great-grandparent

I wonder why these words died out, because they are so much more descriptive than 'three times Great' etc

Zaph

[Top-of-the-hill]

  That is fascinating - I suppose the aristocracy might have needed to use those terms. Or maybe professional record-keepers?
  Molly - I have the Collins Gem German dictionary on my shelves, reprint 1963. (O-level year!)

[MollyC]

Unfortunately Latin is neglected because hardly anyone gets the chance to study it now, and is probably not easy to pick up without the grounding of learning all the declensions and conjugations by rote.  Then medieval Latin is somewhat different from the classical variety.

I also have Collins Gem French dictionary, well-thumbed; Spanish which I only studied for one year; and German which I never studied, but bought it for university finals.  Why?  We were allowed to take dictionaries into an exam on map reading; the "question papers" were one French survey map and one German survey map - 3 hours to write about what you see!

[Top-of-the-hill]

  My grand-daughter took Latin for 2 or 3 years at the grammar school she has just left. She gave up the Latin but continued with Classical studies to A-level. Results still to come.

[BumbleB]

Oooooh Latin!!  I failed 3 O'levels back in the late 1950's - English Language, English Literature and Latin!!  But managed to pass 6 others.   I did re-take English Language, and failed it for a second time     I then gave up. 

[cockney rebel]

But the six that you passed must have been harder than those you failed!
(talking from experience of course)
Well done, anyway
Rebel

[cockney rebel]

PS
My sister failed in "Domestic Science"
Her souffle didn*t rise !