The Bf 109 losses in Spanish Civil War: verified and unverified

[GuerraCivil]

And more corrections to the post 1:

12.7.1937: Bf 109 "6-13" (Braunschweiger) shot down by I-16 - Incorrect, Braunschweiger and his 6-13 were OK.

The fateful last flight of Guido Höness was of course one day earlier:
12.7.1937 Brunete: "6-4" (Höness) shot down by I-16 (Tinker or Soviet pilot?)

Does anyone know more about these cases:

20.4.1938 Sagunto: Bf 109 (pilot?) shot down by I-16
11.5.1938 Sra Espadán: Bf 109 (pilot?) shot down by I-16 (Tarazona)
14.7.1938 Teruel: Bf 109 (pilot?) destroyed by mid-air collision with I-15 (Redondo?)
5.9.1938 Bf 109 (Lutz) shot down by enemy plane or flak? location?
13.12.1938: Bf 109 shot down. location? pilot? air combat or flak?