Where does “reminiscencer” come from?

reminiscencer (English) comes from English ER, from Turkish er, from Ottoman Turkish ایر, from Old Anatolian Turkish ایر, from Proto-Turkic ēder — saddle.

Ancestry of “reminiscencer”, step by step

reminiscencer traces back through two separate lines of ancestry.

via English ER

StepLanguageWordMeaning
1EnglishERThe statistic "Earned Run"; Initialism of...
2Turkisherearly; brave; man, male
3Ottoman Turkishایرsaddle, a seat for a rider placed on the back of a horse or other animal
4Old Anatolian Turkishایرearly, at a time in advance of the usual or expected event
5Proto-Turkicēdersaddle

via English reminiscence

StepLanguageWordMeaning
1EnglishreminiscenceAn act of remembering long-past experiences,...
2Latinreminiscentianominative neuter plural of reminīscēns;...
3Latinreminīscēnsrecollecting, remembering
4Latinreminīscorto recollect or remember
Every word from Proto-Turkic ēderEvery word from Old Anatolian Turkish ایرEvery word from Ottoman Turkish ایر