Luckily Barn Owls are everywhere so someone should submit a petition to make the Family name Phodilidae Lesson 1841 instead of Tytonidae Mathews 1912 (1866) to all of the bird list committees. I nominate Nutcracker.
Bock says that Strigidae 1838 is unavailable. Why? Here is Striginae Bp. From 1831.
http://www.biodiversitylibrary.org/item/38298#page/49/mode/1up .
Saggio d'una distribuzione metodica degli Animali Vertebrati .
It is
the same as
Strigidae Leach 1819.
The fact that Bonaparte applied
Strix Linnaeus to barn owls, while we now apply the very same
Strix Linnaeus to wood owls, did not result in two distinct 'versions' of
Strix separately available from Linnaeus with different type species. With only one generic name to act as type, you cannot typify two family-group names applying to two distinct taxa.
Then there is also Strigidae Anon. “Leach” 1819 and/or 1820. From Synopsis of the Contents of the British Museum. There is an 1814 and 1824 versions online but not 1819 1820.
I've never found the 17th edition of 1820 either (the only one that Bock cited).
14th ed. (1818): [
here] (no family-group names).
15th ed. (1819): [
here] (10 names are available from this edition, including Strigidae).
16th ed. (1819): [
here] (reworked text in comparison to 15th ed., but the names are the same).
>
18th ed. (1821): [
here] (8 names are there that were not in the 15th/16th eds, nor in Rafinesque's
Analyse de la nature).
19th ed. (1821): [
here] (fully identical to the 18th ed.).
The names in the 18th and 19th ed. are precisely those that Bock placed in the 17th ed., hence my working hypothesis is that the text is most likely the same there as well.
Incidentally, note how Leach listed the "White Owl" prominently as first member of his Strigidae...