7 Iyar - Kli Yakar

Yahrzeit of R' Shlomo Ephraim of Lunshitz, ben R' Ahron, Kli Yakar (1619)

(The yahrzeit is recorded in some places as 7 Adar II. According to the bio in one of the newer printings of Kli Yakar, this is a mistake that was made on the new matzeiva and 7 Iyar is correct. I could see how this mistake was made Iyar rubbed out could look like Adar.)

7 Adar - Yahrzeit of Moshe Rabbeinu

Zayin Adar is also the yahrzeit of:

Reb Shlomo Ephraim ben Reb Ahron of Lunshitz ZY"A, Kli Yakar

Reb Yitzchok Isaac ben Moshe Yechezkel Taub of Kaliv ZY"A

Here is a link to tefilos from Likutei Tefilos for Zayin Adar. They are on pages 78-99.

Here is a post about what to do on the yahrzeit of a tzadik.